diff --git a/drivers/net/mmnif.c b/drivers/net/mmnif.c
index 7eeb1ce4..e6142260 100644
--- a/drivers/net/mmnif.c
+++ b/drivers/net/mmnif.c
@@ -1570,7 +1570,9 @@ static void mmnif_irqhandler(struct state* s)
 {
 	static int z = -1;
 	int tmp;
+#if !NO_SYS
 	mmnif_t *mmnif;
+#endif
 
 	if (z < 0) // Find out who I am...
 		z = Z_PID(RC_MY_COREID);
@@ -1582,18 +1584,18 @@ static void mmnif_irqhandler(struct state* s)
 		return;
 	}
 
-	mmnif = (mmnif_t *) mmnif_dev->state;
-	if (!mmnif->check_in_progress) {
 #if NO_SYS
 	mmnif_rx((void*) mmnif_dev);
 #else
+	mmnif = (mmnif_t *) mmnif_dev->state;
+	if (!mmnif->check_in_progress) {
 		if (tcpip_callback_with_block(mmnif_rx, (void*) mmnif_dev, 0) == ERR_OK) {
 			mmnif->check_in_progress = 1;
 		} else {
 			DEBUGPRINTF("rckemacif_handler: unable to send a poll request to the tcpip thread\n");
 		}
-#endif
 	}
+#endif
 
 	tmp = ReadConfigReg(CRB_OWN + (z==0 ? GLCFG0 : GLCFG1));
 	tmp &= ~1;