diff --git a/Controllers/ENESMBusController/ENESMBusInterface/ENESMBusInterface_SpectrixS40G_Windows.cpp b/Controllers/ENESMBusController/ENESMBusInterface/ENESMBusInterface_SpectrixS40G_Windows.cpp
index 41a7a5e0..ec4e5d42 100644
--- a/Controllers/ENESMBusController/ENESMBusInterface/ENESMBusInterface_SpectrixS40G_Windows.cpp
+++ b/Controllers/ENESMBusController/ENESMBusInterface/ENESMBusInterface_SpectrixS40G_Windows.cpp
@@ -117,6 +117,7 @@ unsigned char ENESMBusInterface_SpectrixS40G::ENERegisterRead(ene_dev_id dev, en
         return((unsigned char)ExtraValue[16]);
     }
 
+    return(0);
 }
 
 void ENESMBusInterface_SpectrixS40G::ENERegisterWrite(ene_dev_id dev, ene_register reg, unsigned char val)