kc3-lang/SDL

diff --git a/src/joystick/hidapi/SDL_hidapi_switch.c b/src/joystick/hidapi/SDL_hidapi_switch.c
index 9977fac..f9f30c5 100644
--- a/src/joystick/hidapi/SDL_hidapi_switch.c
+++ b/src/joystick/hidapi/SDL_hidapi_switch.c
@@ -493,7 +493,9 @@ static void ConstructSubcommand(SDL_DriverSwitch_Context *ctx, ESwitchSubcommand
     SDL_memcpy(outPacket->commonData.rumbleData, ctx->m_RumblePacket.rumbleData, sizeof(ctx->m_RumblePacket.rumbleData));
 
     outPacket->ucSubcommandID = ucCommandID;
-    SDL_memcpy(outPacket->rgucSubcommandData, pBuf, ucLen);
+    if (pBuf) {
+        SDL_memcpy(outPacket->rgucSubcommandData, pBuf, ucLen);
+    }
 
     ctx->m_nCommandNumber = (ctx->m_nCommandNumber + 1) & 0xF;
 }