diff --git a/build/node.js b/build/node.js
index b19e20a..cb181fb 100644
--- a/build/node.js
+++ b/build/node.js
@@ -264,7 +264,7 @@ GradientParser.parse = (function() {
         error('Missing (');
       }
 
-      result = callback(captures);
+      var result = callback(captures);
 
       if (!scan(tokens.endCall)) {
         error('Missing )');
diff --git a/build/web.js b/build/web.js
index 94fa388..c813815 100644
--- a/build/web.js
+++ b/build/web.js
@@ -100,7 +100,7 @@ GradientParser.parse = (function() {
         error('Missing (');
       }
 
-      result = callback(captures);
+      var result = callback(captures);
 
       if (!scan(tokens.endCall)) {
         error('Missing )');