diff --git a/src/mesh/RadioLibInterface.h b/src/mesh/RadioLibInterface.h
index 35abcc74b..1b07bf37a 100644
--- a/src/mesh/RadioLibInterface.h
+++ b/src/mesh/RadioLibInterface.h
@@ -54,7 +54,7 @@ class LockingModule : public Module
 
     \param numBytes Number of bytes to transfer.
     */
-    virtual void SPItransfer(uint8_t cmd, uint8_t reg, uint8_t *dataOut, uint8_t *dataIn, uint8_t numBytes);
+    void SPItransfer(uint8_t cmd, uint8_t reg, uint8_t *dataOut, uint8_t *dataIn, uint8_t numBytes) override;
 };
 
 class RadioLibInterface : public RadioInterface, protected concurrency::NotifiedWorkerThread