diff --git a/drivers/net/mmnif.c b/drivers/net/mmnif.c
index e274a468..994e7aee 100644
--- a/drivers/net/mmnif.c
+++ b/drivers/net/mmnif.c
@@ -1119,6 +1119,9 @@ int mmnif_poll(void* e)
 	mmnif_t*	mmnif;
 	unsigned int diff = mmnif_timestamp();
 	unsigned int tmp32 = 0;
+
+	while(!mmnif_dev);
+
 #ifdef DEBUG_MMNIF
 	DEBUGPRINTF("Polling for work to do!!!! ONBBBB  0x%.8X  BBBB\n\n",mmnif->rx_buff);
 #endif