diff --git a/source/scriptinterface/ScriptConversions.h b/source/scriptinterface/ScriptConversions.h
index 1814123dfd..095ec6cf89 100644
--- a/source/scriptinterface/ScriptConversions.h
+++ b/source/scriptinterface/ScriptConversions.h
@@ -86,13 +86,13 @@ template<> bool ScriptInterface::FromJSVal<std::vector<T> >(JSContext* cx, JS::H
 	return FromJSVal_vector(cx, v, out); \
 }
 
-template<typename T> static bool FromJSProperty(JSContext* cx, JS::HandleValue v, const char* name, T& out)
+template<typename T> bool ScriptInterface::FromJSProperty(JSContext* cx, const JS::HandleValue val, const char* name, T& ret)
 {
-	if (!v.isObject())
+	if (!val.isObject())
 		return false;
 
 	JSAutoRequest rq(cx);
-	JS::RootedObject obj(cx, &v.toObject());
+	JS::RootedObject obj(cx, &val.toObject());
 
 	bool hasProperty;
 	if (!JS_HasProperty(cx, obj, name, &hasProperty) || !hasProperty)
@@ -102,7 +102,7 @@ template<typename T> static bool FromJSProperty(JSContext* cx, JS::HandleValue v
 	if (!JS_GetProperty(cx, obj, name, &value))
 		return false;
 
-	return ScriptInterface::FromJSVal(cx, value, out);
+	return FromJSVal(cx, value, ret);
 }
 
 #endif //INCLUDED_SCRIPTCONVERSIONS
diff --git a/source/scriptinterface/ScriptInterface.h b/source/scriptinterface/ScriptInterface.h
index e4d2323be6..323a1531c7 100644
--- a/source/scriptinterface/ScriptInterface.h
+++ b/source/scriptinterface/ScriptInterface.h
@@ -282,6 +282,11 @@ public:
 	 */
 	template<typename T> static void ToJSVal(JSContext* cx, JS::MutableHandleValue ret, T const& val);
 
+	/**
+	 * Convert a named property of an object to a C++ type.
+	 */
+	template<typename T> static bool FromJSProperty(JSContext* cx, const JS::HandleValue val, const char* name, T& ret);
+
 	/**
 	 * MaybeGC tries to determine whether garbage collection in cx's runtime would free up enough memory to be worth the amount of time it would take.
 	 * This calls JS_MaybeGC directly, which does not do incremental GC. Usually you should prefer MaybeIncrementalRuntimeGC.