diff --git a/spec/generated-parser.spec.js b/spec/generated-parser.spec.js
index 82588f5..316efe8 100644
--- a/spec/generated-parser.spec.js
+++ b/spec/generated-parser.spec.js
@@ -91,6 +91,17 @@ describe("generated parser", function() {
     });
   });
 
+  describe("optional matching", function() {
+    varyAll(function(options) {
+      it("matches correctly", function() {
+        var parser = PEG.buildParser('start = "a"?', options);
+
+        expect(parser).toParse("",  "");
+        expect(parser).toParse("a", "a");
+      });
+    });
+  });
+
   describe("zero or more matching", function() {
     varyAll(function(options) {
       it("matches correctly", function() {
diff --git a/test/compiler-test.js b/test/compiler-test.js
index 51eb6c0..0cf4c9c 100644
--- a/test/compiler-test.js
+++ b/test/compiler-test.js
@@ -429,12 +429,6 @@ test("semantic not (with trackLineAndColumn: true)", function() {
   parses(digitsParser, "1\u2029x", [2, 1]); // paragraph separator
 });
 
-testWithVaryingTrackLineAndColumn("optional expressions", function(options) {
-  var parser = PEG.buildParser('start = "a"?', options);
-  parses(parser, "", "");
-  parses(parser, "a", "a");
-});
-
 testWithVaryingTrackLineAndColumn("initializer", function(options) {
   var variableInActionParser = PEG.buildParser(
     '{ a = 42; }; start = "a" { return a; }',