diff --git a/lib/karma-wide-load/node-modules-loader.js b/lib/karma-wide-load/node-modules-loader.js
index <HASH>..<HASH> 100644
--- a/lib/karma-wide-load/node-modules-loader.js
+++ b/lib/karma-wide-load/node-modules-loader.js
@@ -87,6 +87,8 @@ function NodeModulesLoader(){
             ast = esprima.parse(moduleSource),
             requireStatements = [];
 
+        moduleSource = removeSourceMapUrl(moduleSource);
+
         astWalker.walkSyntaxTree(ast, requireStatements);
 
         for(i = 0; i < requireStatements.length; i++) {
@@ -109,6 +111,11 @@ function NodeModulesLoader(){
         return moduleName.charAt(0) !== ".";
     }
 
+    function removeSourceMapUrl(source) {
+
+        return source.replace(/\/\/#\s?sourceMappingURL\s?=\s?.*\.map/g, "");
+    }
+
     this.location = tmpfile.name;
     this.loadModules = loadModules;
 }
Remove sourcemap urls from loaded module sources