diff --git a/src/drv_serial.c b/src/drv_serial.c
index ee55de4b35..e88b1c7687 100644
--- a/src/drv_serial.c
+++ b/src/drv_serial.c
@@ -8,33 +8,4 @@ void serialPrint(serialPort_t *instance, const char *str)
     }
 }
 
-inline uint32_t serialGetBaudRate(serialPort_t *instance)
-{
-    return instance->baudRate;
-}
-
-inline void serialWrite(serialPort_t *instance, uint8_t ch)
-{
-    instance->vTable->serialWrite(instance, ch);
-}
-
-inline uint8_t serialTotalBytesWaiting(serialPort_t *instance)
-{
-    return instance->vTable->serialTotalBytesWaiting(instance);
-}
-
-inline uint8_t serialRead(serialPort_t *instance)
-{
-    return instance->vTable->serialRead(instance);
-}
-
-inline void serialSetBaudRate(serialPort_t *instance, uint32_t baudRate)
-{
-    instance->vTable->serialSetBaudRate(instance, baudRate);
-}
-
-inline bool isSerialTransmitBufferEmpty(serialPort_t *instance)
-{
-    return instance->vTable->isSerialTransmitBufferEmpty(instance);
-}
 
diff --git a/src/drv_serial.h b/src/drv_serial.h
index de3d674385..cb8acf2b26 100644
--- a/src/drv_serial.h
+++ b/src/drv_serial.h
@@ -39,10 +39,35 @@ struct serialPortVTable {
     bool (*isSerialTransmitBufferEmpty)(serialPort_t *instance);
 };
 
-inline void serialWrite(serialPort_t *instance, uint8_t ch);
-inline uint8_t serialTotalBytesWaiting(serialPort_t *instance);
-inline uint8_t serialRead(serialPort_t *instance);
-inline void serialSetBaudRate(serialPort_t *instance, uint32_t baudRate);
-inline bool isSerialTransmitBufferEmpty(serialPort_t *instance);
+static inline uint32_t serialGetBaudRate(serialPort_t *instance)
+{
+    return instance->baudRate;
+}
+
+static inline void serialWrite(serialPort_t *instance, uint8_t ch)
+{
+    instance->vTable->serialWrite(instance, ch);
+}
+
+static inline uint8_t serialTotalBytesWaiting(serialPort_t *instance)
+{
+    return instance->vTable->serialTotalBytesWaiting(instance);
+}
+
+static inline uint8_t serialRead(serialPort_t *instance)
+{
+    return instance->vTable->serialRead(instance);
+}
+
+static inline void serialSetBaudRate(serialPort_t *instance, uint32_t baudRate)
+{
+    instance->vTable->serialSetBaudRate(instance, baudRate);
+}
+
+static inline bool isSerialTransmitBufferEmpty(serialPort_t *instance)
+{
+    return instance->vTable->isSerialTransmitBufferEmpty(instance);
+}
+
 void serialPrint(serialPort_t *instance, const char *str);
 uint32_t serialGetBaudRate(serialPort_t *instance);