diff --git a/scripting/javascript/bindings/ScriptingCore.h b/scripting/javascript/bindings/ScriptingCore.h
index 2ce1d9e237..6a75440f96 100644
--- a/scripting/javascript/bindings/ScriptingCore.h
+++ b/scripting/javascript/bindings/ScriptingCore.h
@@ -294,6 +294,10 @@ public:
 	operator char*() {
 		return (char*)buffer;
 	}
+private:
+	/* Copy and assignment are not supported. */
+    JSStringWrapper(const JSStringWrapper &another);
+    JSStringWrapper &operator=(const JSStringWrapper &another);
 };
 
 JSBool jsb_set_reserved_slot(JSObject *obj, uint32_t idx, jsval value);
diff --git a/scripting/javascript/bindings/js_bindings_core.cpp b/scripting/javascript/bindings/js_bindings_core.cpp
index 8297f7b011..8ab4105c69 100644
--- a/scripting/javascript/bindings/js_bindings_core.cpp
+++ b/scripting/javascript/bindings/js_bindings_core.cpp
@@ -80,8 +80,11 @@ JSBool JSBCore_log(JSContext *cx, uint32_t argc, jsval *vp)
 		JSString *string = NULL;
 		JS_ConvertArguments(cx, argc, JS_ARGV(cx, vp), "S", &string);
 		if (string) {
-            JSAutoByteString log_str(cx, string);
-			CCLOG(log_str.ptr());
+            char* log_str = JS_EncodeString(cx, string);
+			if (log_str) {
+				CCLOG(log_str);
+				JS_free(cx, (void*)log_str);
+			}
 		}
 		
 		return JS_TRUE;