diff --git a/src/main/blackbox/blackbox_io.c b/src/main/blackbox/blackbox_io.c
index 5f4088bbc8..894545bc00 100644
--- a/src/main/blackbox/blackbox_io.c
+++ b/src/main/blackbox/blackbox_io.c
@@ -614,7 +614,7 @@ void blackboxDeviceClose(void)
              * of time to shut down asynchronously, we're the only ones that know when to call it.
              */
             if (blackboxPortSharing == PORTSHARING_SHARED) {
-                mspSerialAllocatePorts(&masterConfig.serialConfig);
+                mspSerialAllocatePorts();
             }
         break;
         default:
diff --git a/src/main/fc/mw.c b/src/main/fc/mw.c
index 85c140ddad..f9a2e6fcac 100644
--- a/src/main/fc/mw.c
+++ b/src/main/fc/mw.c
@@ -718,7 +718,7 @@ void processRx(uint32_t currentTime)
         } else {
             // the telemetry state must be checked immediately so that shared serial ports are released.
             telemetryCheckState();
-            mspSerialAllocatePorts(&masterConfig.serialConfig);
+            mspSerialAllocatePorts();
         }
     }
 #endif
diff --git a/src/main/io/serial_msp.c b/src/main/io/serial_msp.c
index 079d02f4a2..0f95aa5b18 100644
--- a/src/main/io/serial_msp.c
+++ b/src/main/io/serial_msp.c
@@ -50,10 +50,8 @@ static void resetMspPort(mspPort_t *mspPortToReset, serialPort_t *serialPort)
     mspPortToReset->port = serialPort;
 }
 
-void mspSerialAllocatePorts(serialConfig_t *serialConfig)
+void mspSerialAllocatePorts(void)
 {
-    UNUSED(serialConfig);
-
     serialPort_t *serialPort;
 
     uint8_t portIndex = 0;
@@ -89,11 +87,11 @@ void mspSerialReleasePortIfAllocated(serialPort_t *serialPort)
     }
 }
 
-void mspSerialInit(serialConfig_t *serialConfig)
+void mspSerialInit(void)
 {
     mspInit();
-    memset(mspPorts, 0x00, sizeof(mspPorts));
-    mspSerialAllocatePorts(serialConfig);
+    memset(mspPorts, 0, sizeof(mspPorts));
+    mspSerialAllocatePorts();
 }
 
 static void setCurrentPort(mspPort_t *port)
diff --git a/src/main/io/serial_msp.h b/src/main/io/serial_msp.h
index f8af0c07c6..2d9d89afd8 100644
--- a/src/main/io/serial_msp.h
+++ b/src/main/io/serial_msp.h
@@ -54,8 +54,7 @@ extern struct bufWriter_s *writer;
 extern bool isRebootScheduled;
 
 
-struct serialConfig_s;
-void mspSerialInit(struct serialConfig_s *serialConfig);
+void mspSerialInit(void);
 void mspSerialProcess(void);
-void mspSerialAllocatePorts(struct serialConfig_s *serialConfig);
+void mspSerialAllocatePorts(void);
 void mspSerialReleasePortIfAllocated(struct serialPort_s *serialPort);
diff --git a/src/main/main.c b/src/main/main.c
index 3f168f09d1..35fd9700c8 100644
--- a/src/main/main.c
+++ b/src/main/main.c
@@ -505,7 +505,7 @@ void init(void)
 
     imuInit();
 
-    mspSerialInit(&masterConfig.serialConfig);
+    mspSerialInit();
 
 #ifdef USE_CLI
     cliInit(&masterConfig.serialConfig);
diff --git a/src/main/msp/msp_server_fc.c b/src/main/msp/msp_server_fc.c
index 4934d67d72..2af9d6adf3 100755
--- a/src/main/msp/msp_server_fc.c
+++ b/src/main/msp/msp_server_fc.c
@@ -1898,7 +1898,7 @@ static bool processInCommand(void)
     return true;
 }
 
-void mspProcessReceivedCommand()
+void mspProcessReceivedCommand(void)
 {
     if (!(processOutCommand(currentPort->cmdMSP) || processInCommand())) {
         headSerialError(0);