diff --git a/backends/keymapper/virtual-mouse.cpp b/backends/keymapper/virtual-mouse.cpp
index 09f528700d2..552fdbd1ee3 100644
--- a/backends/keymapper/virtual-mouse.cpp
+++ b/backends/keymapper/virtual-mouse.cpp
@@ -141,6 +141,8 @@ bool VirtualMouse::notifyEvent(const Event &event) {
 	case kCustomActionVirtualMouseSlow:
 		_slowModifier = 0.9f * (1.f - event.joystick.position / (float)JOYAXIS_MAX) + 0.1f;
 		return true;
+	default:
+		break;
 	}
 
 	return false;