diff --git a/sys/dev/e1000/if_em.c b/sys/dev/e1000/if_em.c
index 49ad7b2f260b..dbb6f427a343 100644
--- a/sys/dev/e1000/if_em.c
+++ b/sys/dev/e1000/if_em.c
@@ -4100,7 +4100,7 @@ em_setup_receive_ring(struct rx_ring *rxr)
 	if (sj < 0)
 		sj += adapter->num_rx_desc;
 
-	for (j = 0; j != adapter->num_rx_desc; j++, sj++) {
+	for (int j = 0; j != adapter->num_rx_desc; j++, sj++) {
 		void *addr;
 		int sz;