diff --git a/spec/artifacts/source.map.amd.js b/spec/artifacts/source.map.amd.txt
similarity index 100%
rename from spec/artifacts/source.map.amd.js
rename to spec/artifacts/source.map.amd.txt
diff --git a/spec/expected/source.map.amd.js b/spec/expected/source.map.amd.js
index 847397628..1f010db73 100644
--- a/spec/expected/source.map.amd.js
+++ b/spec/expected/source.map.amd.js
@@ -1,2 +1,2 @@
 define(["handlebars.runtime"],function(e){var t=(e=e.default).template;return(e.templates=e.templates||{}).test=t({compiler:[8,">= 4.3.0"],main:function(e,t,a,n,i){return"<div>1</div>"},useData:!0})});
-//# sourceMappingURL=./spec/artifacts/source.map.amd.js
\ No newline at end of file
+//# sourceMappingURL=./spec/artifacts/source.map.amd.txt
\ No newline at end of file
diff --git a/tasks/test-bin.js b/tasks/test-bin.js
index c2a0bf866..5d3e9927a 100644
--- a/tasks/test-bin.js
+++ b/tasks/test-bin.js
@@ -155,7 +155,7 @@ const testCases = [
       '-N',
       'test',
       '--map',
-      './spec/artifacts/source.map.amd.js'
+      './spec/artifacts/source.map.amd.txt'
     ],
     outputLocation: 'stdout',
     expectedOutputSpec: './spec/expected/source.map.amd.js'
@@ -165,10 +165,15 @@ const testCases = [
 module.exports = function(grunt) {
   grunt.registerTask('test:bin', function() {
     testCases.forEach(
-      ({ binInputParameters, outputLocation, expectedOutputSpec, expectedOutput }) => {
+      ({
+        binInputParameters,
+        outputLocation,
+        expectedOutputSpec,
+        expectedOutput
+      }) => {
         const stdout = executeBinHandlebars(...binInputParameters);
-        
-        if( !expectedOutput && expectedOutputSpec){
+
+        if (!expectedOutput && expectedOutputSpec) {
           expectedOutput = fs.readFileSync(expectedOutputSpec, 'utf-8');
         }
 
@@ -190,7 +195,6 @@ module.exports = function(grunt) {
         );
       }
     );
-
   });
 };