diff --git a/lib/compiler/passes/generate-bytecode.js b/lib/compiler/passes/generate-bytecode.js
index d944f28..3f36ce9 100644
--- a/lib/compiler/passes/generate-bytecode.js
+++ b/lib/compiler/passes/generate-bytecode.js
@@ -407,11 +407,10 @@ function generateBytecode(ast) {
               [op.LOAD_SAVED_POS, node.elements.length],
               buildCall(
                 functionIndex,
-                node.elements.length,
+                node.elements.length + 1,
                 context.env,
                 context.sp
-              ),
-              [op.NIP]
+              )
             );
           } else {
             return buildSequence([op.WRAP, node.elements.length], [op.NIP]);
diff --git a/lib/parser.js b/lib/parser.js
index 906fbe7..c4df0ea 100644
--- a/lib/parser.js
+++ b/lib/parser.js
@@ -688,8 +688,7 @@ function peg$parse(input, options) {
         }
         if (s3 !== peg$FAILED) {
           peg$savedPos = s0;
-          s1 = peg$c0(s2, s3);
-          s0 = s1;
+          s0 = peg$c0(s2, s3);
         } else {
           peg$currPos = s0;
           s0 = peg$FAILED;
@@ -715,8 +714,7 @@ function peg$parse(input, options) {
       s2 = peg$parseEOS();
       if (s2 !== peg$FAILED) {
         peg$savedPos = s0;
-        s1 = peg$c1(s1);
-        s0 = s1;
+        s0 = peg$c1(s1);
       } else {
         peg$currPos = s0;
         s0 = peg$FAILED;
@@ -771,8 +769,7 @@ function peg$parse(input, options) {
                 s7 = peg$parseEOS();
                 if (s7 !== peg$FAILED) {
                   peg$savedPos = s0;
-                  s1 = peg$c4(s1, s3, s6);
-                  s0 = s1;
+                  s0 = peg$c4(s1, s3, s6);
                 } else {
                   peg$currPos = s0;
                   s0 = peg$FAILED;
@@ -883,8 +880,7 @@ function peg$parse(input, options) {
       }
       if (s2 !== peg$FAILED) {
         peg$savedPos = s0;
-        s1 = peg$c7(s1, s2);
-        s0 = s1;
+        s0 = peg$c7(s1, s2);
       } else {
         peg$currPos = s0;
         s0 = peg$FAILED;
@@ -923,8 +919,7 @@ function peg$parse(input, options) {
       }
       if (s2 !== peg$FAILED) {
         peg$savedPos = s0;
-        s1 = peg$c8(s1, s2);
-        s0 = s1;
+        s0 = peg$c8(s1, s2);
       } else {
         peg$currPos = s0;
         s0 = peg$FAILED;
@@ -979,8 +974,7 @@ function peg$parse(input, options) {
       }
       if (s2 !== peg$FAILED) {
         peg$savedPos = s0;
-        s1 = peg$c9(s1, s2);
-        s0 = s1;
+        s0 = peg$c9(s1, s2);
       } else {
         peg$currPos = s0;
         s0 = peg$FAILED;
@@ -1014,8 +1008,7 @@ function peg$parse(input, options) {
             s5 = peg$parsePrefixedExpression();
             if (s5 !== peg$FAILED) {
               peg$savedPos = s0;
-              s1 = peg$c12(s1, s5);
-              s0 = s1;
+              s0 = peg$c12(s1, s5);
             } else {
               peg$currPos = s0;
               s0 = peg$FAILED;
@@ -1054,8 +1047,7 @@ function peg$parse(input, options) {
         s3 = peg$parseSuffixedExpression();
         if (s3 !== peg$FAILED) {
           peg$savedPos = s0;
-          s1 = peg$c13(s1, s3);
-          s0 = s1;
+          s0 = peg$c13(s1, s3);
         } else {
           peg$currPos = s0;
           s0 = peg$FAILED;
@@ -1118,8 +1110,7 @@ function peg$parse(input, options) {
         s3 = peg$parseSuffixedOperator();
         if (s3 !== peg$FAILED) {
           peg$savedPos = s0;
-          s1 = peg$c20(s1, s3);
-          s0 = s1;
+          s0 = peg$c20(s1, s3);
         } else {
           peg$currPos = s0;
           s0 = peg$FAILED;
@@ -1208,8 +1199,7 @@ function peg$parse(input, options) {
                       }
                       if (s5 !== peg$FAILED) {
                         peg$savedPos = s0;
-                        s1 = peg$c31(s3);
-                        s0 = s1;
+                        s0 = peg$c31(s3);
                       } else {
                         peg$currPos = s0;
                         s0 = peg$FAILED;
@@ -1300,8 +1290,7 @@ function peg$parse(input, options) {
       }
       if (s2 !== peg$FAILED) {
         peg$savedPos = s0;
-        s1 = peg$c32(s1);
-        s0 = s1;
+        s0 = peg$c32(s1);
       } else {
         peg$currPos = s0;
         s0 = peg$FAILED;
@@ -1325,8 +1314,7 @@ function peg$parse(input, options) {
         s3 = peg$parseCodeBlock();
         if (s3 !== peg$FAILED) {
           peg$savedPos = s0;
-          s1 = peg$c33(s1, s3);
-          s0 = s1;
+          s0 = peg$c33(s1, s3);
         } else {
           peg$currPos = s0;
           s0 = peg$FAILED;
@@ -1844,8 +1832,7 @@ function peg$parse(input, options) {
       s2 = peg$parseIdentifierName();
       if (s2 !== peg$FAILED) {
         peg$savedPos = s0;
-        s1 = peg$c68(s2);
-        s0 = s1;
+        s0 = peg$c68(s2);
       } else {
         peg$currPos = s0;
         s0 = peg$FAILED;
@@ -1873,8 +1860,7 @@ function peg$parse(input, options) {
       }
       if (s2 !== peg$FAILED) {
         peg$savedPos = s0;
-        s1 = peg$c70(s1, s2);
-        s0 = s1;
+        s0 = peg$c70(s1, s2);
       } else {
         peg$currPos = s0;
         s0 = peg$FAILED;
@@ -1925,8 +1911,7 @@ function peg$parse(input, options) {
             s2 = peg$parseUnicodeEscapeSequence();
             if (s2 !== peg$FAILED) {
               peg$savedPos = s0;
-              s1 = peg$c75(s2);
-              s0 = s1;
+              s0 = peg$c75(s2);
             } else {
               peg$currPos = s0;
               s0 = peg$FAILED;
@@ -2167,8 +2152,7 @@ function peg$parse(input, options) {
       }
       if (s2 !== peg$FAILED) {
         peg$savedPos = s0;
-        s1 = peg$c83(s1, s2);
-        s0 = s1;
+        s0 = peg$c83(s1, s2);
       } else {
         peg$currPos = s0;
         s0 = peg$FAILED;
@@ -2215,8 +2199,7 @@ function peg$parse(input, options) {
         }
         if (s3 !== peg$FAILED) {
           peg$savedPos = s0;
-          s1 = peg$c87(s2);
-          s0 = s1;
+          s0 = peg$c87(s2);
         } else {
           peg$currPos = s0;
           s0 = peg$FAILED;
@@ -2255,8 +2238,7 @@ function peg$parse(input, options) {
           }
           if (s3 !== peg$FAILED) {
             peg$savedPos = s0;
-            s1 = peg$c87(s2);
-            s0 = s1;
+            s0 = peg$c87(s2);
           } else {
             peg$currPos = s0;
             s0 = peg$FAILED;
@@ -2315,8 +2297,7 @@ function peg$parse(input, options) {
       s2 = peg$parseSourceCharacter();
       if (s2 !== peg$FAILED) {
         peg$savedPos = s0;
-        s1 = peg$c90();
-        s0 = s1;
+        s0 = peg$c90();
       } else {
         peg$currPos = s0;
         s0 = peg$FAILED;
@@ -2338,8 +2319,7 @@ function peg$parse(input, options) {
         s2 = peg$parseEscapeSequence();
         if (s2 !== peg$FAILED) {
           peg$savedPos = s0;
-          s1 = peg$c75(s2);
-          s0 = s1;
+          s0 = peg$c75(s2);
         } else {
           peg$currPos = s0;
           s0 = peg$FAILED;
@@ -2392,8 +2372,7 @@ function peg$parse(input, options) {
       s2 = peg$parseSourceCharacter();
       if (s2 !== peg$FAILED) {
         peg$savedPos = s0;
-        s1 = peg$c90();
-        s0 = s1;
+        s0 = peg$c90();
       } else {
         peg$currPos = s0;
         s0 = peg$FAILED;
@@ -2415,8 +2394,7 @@ function peg$parse(input, options) {
         s2 = peg$parseEscapeSequence();
         if (s2 !== peg$FAILED) {
           peg$savedPos = s0;
-          s1 = peg$c75(s2);
-          s0 = s1;
+          s0 = peg$c75(s2);
         } else {
           peg$currPos = s0;
           s0 = peg$FAILED;
@@ -2490,8 +2468,7 @@ function peg$parse(input, options) {
             }
             if (s5 !== peg$FAILED) {
               peg$savedPos = s0;
-              s1 = peg$c98(s2, s3, s5);
-              s0 = s1;
+              s0 = peg$c98(s2, s3, s5);
             } else {
               peg$currPos = s0;
               s0 = peg$FAILED;
@@ -2538,8 +2515,7 @@ function peg$parse(input, options) {
         s3 = peg$parseClassCharacter();
         if (s3 !== peg$FAILED) {
           peg$savedPos = s0;
-          s1 = peg$c101(s1, s3);
-          s0 = s1;
+          s0 = peg$c101(s1, s3);
         } else {
           peg$currPos = s0;
           s0 = peg$FAILED;
@@ -2592,8 +2568,7 @@ function peg$parse(input, options) {
       s2 = peg$parseSourceCharacter();
       if (s2 !== peg$FAILED) {
         peg$savedPos = s0;
-        s1 = peg$c90();
-        s0 = s1;
+        s0 = peg$c90();
       } else {
         peg$currPos = s0;
         s0 = peg$FAILED;
@@ -2615,8 +2590,7 @@ function peg$parse(input, options) {
         s2 = peg$parseEscapeSequence();
         if (s2 !== peg$FAILED) {
           peg$savedPos = s0;
-          s1 = peg$c75(s2);
-          s0 = s1;
+          s0 = peg$c75(s2);
         } else {
           peg$currPos = s0;
           s0 = peg$FAILED;
@@ -2648,8 +2622,7 @@ function peg$parse(input, options) {
       s2 = peg$parseLineTerminatorSequence();
       if (s2 !== peg$FAILED) {
         peg$savedPos = s0;
-        s1 = peg$c102();
-        s0 = s1;
+        s0 = peg$c102();
       } else {
         peg$currPos = s0;
         s0 = peg$FAILED;
@@ -2688,8 +2661,7 @@ function peg$parse(input, options) {
         }
         if (s2 !== peg$FAILED) {
           peg$savedPos = s0;
-          s1 = peg$c105();
-          s0 = s1;
+          s0 = peg$c105();
         } else {
           peg$currPos = s0;
           s0 = peg$FAILED;
@@ -2863,8 +2835,7 @@ function peg$parse(input, options) {
       s2 = peg$parseSourceCharacter();
       if (s2 !== peg$FAILED) {
         peg$savedPos = s0;
-        s1 = peg$c90();
-        s0 = s1;
+        s0 = peg$c90();
       } else {
         peg$currPos = s0;
         s0 = peg$FAILED;
@@ -2941,8 +2912,7 @@ function peg$parse(input, options) {
       }
       if (s2 !== peg$FAILED) {
         peg$savedPos = s0;
-        s1 = peg$c128(s2);
-        s0 = s1;
+        s0 = peg$c128(s2);
       } else {
         peg$currPos = s0;
         s0 = peg$FAILED;
@@ -3002,8 +2972,7 @@ function peg$parse(input, options) {
       }
       if (s2 !== peg$FAILED) {
         peg$savedPos = s0;
-        s1 = peg$c128(s2);
-        s0 = s1;
+        s0 = peg$c128(s2);
       } else {
         peg$currPos = s0;
         s0 = peg$FAILED;
@@ -3088,8 +3057,7 @@ function peg$parse(input, options) {
         }
         if (s3 !== peg$FAILED) {
           peg$savedPos = s0;
-          s1 = peg$c141(s2);
-          s0 = s1;
+          s0 = peg$c141(s2);
         } else {
           peg$currPos = s0;
           s0 = peg$FAILED;
diff --git a/test/unit/compiler/passes/generate-bytecode.spec.js b/test/unit/compiler/passes/generate-bytecode.spec.js
index e9d8f3c..128e3fe 100644
--- a/test/unit/compiler/passes/generate-bytecode.spec.js
+++ b/test/unit/compiler/passes/generate-bytecode.spec.js
@@ -146,14 +146,13 @@ describe("compiler pass |generateBytecode|", function() {
         expect(pass).to.changeAST(grammar, bytecodeDetails([
           5,                           // PUSH_CURR_POS
           18, 0, 2, 2, 22, 0, 23, 1,   // <elements[0]>
-          15, 40, 3,                   // IF_NOT_ERROR
+          15, 39, 3,                   // IF_NOT_ERROR
           18, 2, 2, 2, 22, 2, 23, 3,   //   * <elements[1]>
-          15, 25, 4,                   //     IF_NOT_ERROR
+          15, 24, 4,                   //     IF_NOT_ERROR
           18, 4, 2, 2, 22, 4, 23, 5,   //       * <elements[2]>
-          15, 10, 4,                   //         IF_NOT_ERROR
+          15, 9, 4,                   //         IF_NOT_ERROR
           24, 3,                       //           * LOAD_SAVED_POS
-          26, 6, 3, 3, 2, 1, 0,        //             CALL
-          9,                           //             NIP
+          26, 6, 4, 3, 2, 1, 0,        //             CALL <6>
           8, 3,                        //           * POP_N
           7,                           //             POP_CURR_POS
           3,                           //             PUSH_FAILED