diff --git a/lighthub/modules/out_pid.h b/lighthub/modules/out_pid.h
index f903310..804f257 100644
--- a/lighthub/modules/out_pid.h
+++ b/lighthub/modules/out_pid.h
@@ -41,6 +41,6 @@ public:
 protected:
     pidPersistent * store;
     bool getConfig();
-    int  getAlarmVal();
+    float  getAlarmVal();
 };
 #endif