diff --git a/src/main/fc/fc_msp.c b/src/main/fc/fc_msp.c
index 3d7c6776ea..7737ed0825 100644
--- a/src/main/fc/fc_msp.c
+++ b/src/main/fc/fc_msp.c
@@ -2072,7 +2072,7 @@ static mspResult_e mspCommonProcessInCommand(uint8_t cmdMSP, sbuf_t *src)
         return mspFcProcessInCommand(cmdMSP, src);
 #endif
     }
-    return MSP_RESULT_ERROR;
+    return MSP_RESULT_ACK;
 }
 
 /*