diff --git a/src/libcamera/control_serializer.cpp b/src/libcamera/control_serializer.cpp
index 6c676811..edf3e5ca 100644
--- a/src/libcamera/control_serializer.cpp
+++ b/src/libcamera/control_serializer.cpp
@@ -361,9 +361,11 @@ ControlValue ControlSerializer::load<ControlValue>(ControlType type,
 		return ControlValue(value);
 	}
 
-	default:
+	case ControlTypeNone:
 		return ControlValue();
 	}
+
+	return ControlValue();
 }
 
 template<>