diff --git a/lib/compiler/passes/generate-js.js b/lib/compiler/passes/generate-js.js
index 07fc570..04651ba 100644
--- a/lib/compiler/passes/generate-js.js
+++ b/lib/compiler/passes/generate-js.js
@@ -1539,6 +1539,7 @@ function generateJS( ast, options ) {
                 const requires = dependencyIds
                     .map( id => `require("${ js.stringEscape( id ) }")` )
                     .join( ", " );
+                const args = dependencyVars.map( v => "root." + v ).join( ", " );
                 const params = dependencyVars.join( ", " );
 
                 parts.push( [
@@ -1554,7 +1555,7 @@ function generateJS( ast, options ) {
 
                     parts.push( [
                         "  } else {",
-                        "    root." + options.exportVar + " = factory();"
+                        "    root." + options.exportVar + " = factory(" + args + ");"
                     ].join( "\n" ) );
 
                 }