diff --git a/reactos/drivers/net/dd/pcnet/pcnet.c b/reactos/drivers/net/dd/pcnet/pcnet.c
index 8ff01aa9981..9295ff7a896 100644
--- a/reactos/drivers/net/dd/pcnet/pcnet.c
+++ b/reactos/drivers/net/dd/pcnet/pcnet.c
@@ -719,6 +719,7 @@ MiInitChip(
   Adapter->Flags &= ~RESET_IN_PROGRESS;
 }
 
+#if DBG
 static BOOLEAN
 MiTestCard(
     PADAPTER Adapter)
@@ -775,6 +776,7 @@ MiTestCard(
 
   return TRUE;
 }
+#endif
 
 static NDIS_STATUS
 STDCALL