diff --git a/wmgr.gd b/wmgr.gd
index 4017d15..5a948d0 100644
--- a/wmgr.gd
+++ b/wmgr.gd
@@ -68,11 +68,11 @@ func get_mode() -> String:
 			Logger.error("wmgr","Failed to get window mode: The window mode id \"" + str(DisplayServer.window_get_mode()) + "\" is not known to CORE.")
 			return "INVALID_MODE"
 
-func get_fps() -> String:
+func get_fps() -> float:
 	if str(delta) == "0":
-		game_fps = INF
+		return INF
 	else:
-		game_fps = 1/delta
+		return 1/delta
 
 func get_rendertime() -> float:
 	return Performance.get_monitor(Performance.TIME_PROCESS)