diff --git a/src/main/fc/fc_msp.c b/src/main/fc/fc_msp.c
index 3903832de4..e067605d94 100644
--- a/src/main/fc/fc_msp.c
+++ b/src/main/fc/fc_msp.c
@@ -893,10 +893,8 @@ static bool mspCommonProcessOutCommand(uint8_t cmdMSP, sbuf_t *dst, mspPostProce
 }
 
 #ifdef USE_OSD_SLAVE
-static bool mspOsdSlaveProcessOutCommand(uint8_t cmdMSP, sbuf_t *dst, mspPostProcessFnPtr *mspPostProcessFn)
+static bool mspOsdSlaveProcessOutCommand(uint8_t cmdMSP, sbuf_t *dst)
 {
-    UNUSED(mspPostProcessFn);
-
     switch (cmdMSP) {
     case MSP_STATUS_EX:
     case MSP_STATUS:
@@ -926,10 +924,8 @@ static bool mspOsdSlaveProcessOutCommand(uint8_t cmdMSP, sbuf_t *dst, mspPostPro
 #endif
 
 #ifndef USE_OSD_SLAVE
-static bool mspFcProcessOutCommand(uint8_t cmdMSP, sbuf_t *dst, mspPostProcessFnPtr *mspPostProcessFn)
+static bool mspFcProcessOutCommand(uint8_t cmdMSP, sbuf_t *dst)
 {
-    UNUSED(mspPostProcessFn);
-
     switch (cmdMSP) {
     case MSP_STATUS_EX:
     case MSP_STATUS:
@@ -1418,10 +1414,8 @@ static bool mspFcProcessOutCommand(uint8_t cmdMSP, sbuf_t *dst, mspPostProcessFn
     return true;
 }
 
-static mspResult_e mspFcProcessOutCommandWithArg(uint8_t cmdMSP, sbuf_t *arg, sbuf_t *dst, mspPostProcessFnPtr *mspPostProcessFn)
+static mspResult_e mspFcProcessOutCommandWithArg(uint8_t cmdMSP, sbuf_t *arg, sbuf_t *dst)
 {
-    UNUSED(mspPostProcessFn);
-
     switch (cmdMSP) {
     case MSP_BOXNAMES:
         {
@@ -2292,13 +2286,13 @@ mspResult_e mspFcProcessCommand(mspPacket_t *cmd, mspPacket_t *reply, mspPostPro
     if (mspCommonProcessOutCommand(cmdMSP, dst, mspPostProcessFn)) {
         ret = MSP_RESULT_ACK;
 #ifndef USE_OSD_SLAVE
-    } else if (mspFcProcessOutCommand(cmdMSP, dst, mspPostProcessFn)) {
+    } else if (mspFcProcessOutCommand(cmdMSP, dst)) {
         ret = MSP_RESULT_ACK;
-    } else if ((ret = mspFcProcessOutCommandWithArg(cmdMSP, src, dst, mspPostProcessFn)) != MSP_RESULT_CMD_UNKNOWN) {
+    } else if ((ret = mspFcProcessOutCommandWithArg(cmdMSP, src, dst)) != MSP_RESULT_CMD_UNKNOWN) {
         /* ret */;
 #endif
 #ifdef USE_OSD_SLAVE
-    } else if (mspOsdSlaveProcessOutCommand(cmdMSP, dst, mspPostProcessFn)) {
+    } else if (mspOsdSlaveProcessOutCommand(cmdMSP, dst)) {
         ret = MSP_RESULT_ACK;
 #endif
 #ifdef USE_SERIAL_4WAY_BLHELI_INTERFACE