diff --git a/power-control-x86/src/power_control.cpp b/power-control-x86/src/power_control.cpp
index ab704d8..8daf4b7 100644
--- a/power-control-x86/src/power_control.cpp
+++ b/power-control-x86/src/power_control.cpp
@@ -363,7 +363,7 @@
             return powerStateCheckForWarmReset;
             break;
         default:
-            return std::function<void(const Event)>{};
+            return nullptr;
             break;
     }
 };