kc3-lang/SDL

diff --git a/src/joystick/hidapi/SDL_hidapijoystick.c b/src/joystick/hidapi/SDL_hidapijoystick.c
index 564a570..e7f7764 100644
--- a/src/joystick/hidapi/SDL_hidapijoystick.c
+++ b/src/joystick/hidapi/SDL_hidapijoystick.c
@@ -918,7 +918,7 @@ HIDAPI_JoystickGetDeviceGUID(int device_index)
 static SDL_JoystickID
 HIDAPI_JoystickGetDeviceInstanceID(int device_index)
 {
-    SDL_JoystickID joystickID;
+    SDL_JoystickID joystickID = -1;
     SDL_LockMutex(SDL_HIDAPI_mutex);
     HIDAPI_GetDeviceByIndex(device_index, &joystickID);
     SDL_UnlockMutex(SDL_HIDAPI_mutex);