diff --git a/scripting/engine.cpp b/scripting/engine.cpp
index ae67b469029..a28cff2983b 100644
--- a/scripting/engine.cpp
+++ b/scripting/engine.cpp
@@ -457,5 +457,20 @@ namespace mongo {
             ( x == 0 || ! isalpha( code[x-1] ) ) &&
             ! isalpha( code[x+6] );
     }
+
+    const char * jsSkipWhiteSpace( const char * raw ){
+        while ( raw[0] ){
+            while (isspace(*raw)) {
+                raw++;
+            }
+            
+            if ( raw[0] != '/' || raw[1] != '/' )
+                break;
+            
+            while ( raw[0] && raw[0] != '\n' )
+                raw++;
+        }
+        return raw;
+    }
 }
     
diff --git a/scripting/engine.h b/scripting/engine.h
index e9ffd98caba..5b5c480ce77 100644
--- a/scripting/engine.h
+++ b/scripting/engine.h
@@ -234,5 +234,7 @@ namespace mongo {
 
     bool hasJSReturn( const string& s );
 
+    const char * jsSkipWhiteSpace( const char * raw );
+
     extern ScriptEngine * globalScriptEngine;
 }
diff --git a/scripting/engine_spidermonkey.cpp b/scripting/engine_spidermonkey.cpp
index 3c5ed2b155b..f39d9d4f19c 100644
--- a/scripting/engine_spidermonkey.cpp
+++ b/scripting/engine_spidermonkey.cpp
@@ -427,18 +427,8 @@ namespace mongo {
         JSFunction * _compileFunction( const char * raw , JSObject * assoc , const char *& gcName ){
             if ( ! assoc )
                 assoc = JS_GetGlobalObject( _context );
-            
-            while ( raw[0] ){
-                while (isspace(*raw)) {
-                    raw++;
-                }
 
-                if ( raw[0] != '/' || raw[1] != '/' )
-                    break;
-                
-                while ( raw[0] && raw[0] != '\n' )
-                    raw++;
-            }
+            raw = jsSkipWhiteSpace( raw );
 
             //cout << "RAW\n---\n" << raw << "\n---" << endl;
 
diff --git a/scripting/engine_v8.cpp b/scripting/engine_v8.cpp
index b883a45ca42..cb32f7c24cf 100644
--- a/scripting/engine_v8.cpp
+++ b/scripting/engine_v8.cpp
@@ -258,7 +258,7 @@ namespace mongo {
     }
         
     Local< v8::Function > V8Scope::__createFunction( const char * raw ){
-        for(; isspace( *raw ); ++raw ); // skip whitespace
+        raw = jsSkipWhiteSpace( raw );
         string code = raw;
         if ( !hasFunctionIdentifier( code ) ) {
             if ( code.find( "\n" ) == string::npos &&