diff --git a/src/main/io/gimbal_serial.c b/src/main/io/gimbal_serial.c
index c99facbea9c..be9966c8572 100644
--- a/src/main/io/gimbal_serial.c
+++ b/src/main/io/gimbal_serial.c
@@ -173,13 +173,13 @@ bool gimbalSerialDetect(void)
 #endif
 
 #ifdef GIMBAL_UNIT_TEST
-void gimbalSerialProcess(gimbalDevice_t *gimbalDevice, timeUs_t currentTime)
+void gimbalSerialProcess(const gimbalDevice_t *gimbalDevice, timeUs_t currentTime)
 {
     UNUSED(gimbalDevice);
     UNUSED(currentTime);
 }
 #else
-void gimbalSerialProcess(gimbalDevice_t *gimbalDevice, timeUs_t currentTime)
+void gimbalSerialProcess(const gimbalDevice_t *gimbalDevice, timeUs_t currentTime)
 {
     UNUSED(currentTime);
 
diff --git a/src/main/io/gimbal_serial.h b/src/main/io/gimbal_serial.h
index d72148cf93f..f11a4238f6e 100644
--- a/src/main/io/gimbal_serial.h
+++ b/src/main/io/gimbal_serial.h
@@ -76,7 +76,7 @@ int16_t gimbal2pwm(int16_t value);
 
 bool gimbalSerialInit(void);
 bool gimbalSerialDetect(void);
-void gimbalSerialProcess(gimbalDevice_t *gimbalDevice, timeUs_t currentTime);
+void gimbalSerialProcess(const gimbalDevice_t *gimbalDevice, timeUs_t currentTime);
 bool gimbalSerialIsReady(const gimbalDevice_t *gimbalDevice);
 gimbalDevType_e gimbalSerialGetDeviceType(const gimbalDevice_t *gimbalDevice);
 bool gimbalSerialHasHeadTracker(const gimbalDevice_t *gimbalDevice);