diff --git a/sys/dev/ixl/if_ixl.c b/sys/dev/ixl/if_ixl.c
index 2ac5b921882..36d79adb123 100644
--- a/sys/dev/ixl/if_ixl.c
+++ b/sys/dev/ixl/if_ixl.c
@@ -3380,7 +3380,7 @@ ixl_add_sysctls_eth_stats(struct sysctl_ctx_list *ctx,
 	};
 
 	struct ixl_sysctl_info *entry = ctls;
-	while (entry->stat != 0)
+	while (entry->stat != NULL)
 	{
 		SYSCTL_ADD_UQUAD(ctx, child, OID_AUTO, entry->name,
 				CTLFLAG_RD, entry->stat,
@@ -3439,7 +3439,7 @@ ixl_add_sysctls_mac_stats(struct sysctl_ctx_list *ctx,
 	};
 
 	struct ixl_sysctl_info *entry = ctls;
-	while (entry->stat != 0)
+	while (entry->stat != NULL)
 	{
 		SYSCTL_ADD_UQUAD(ctx, stat_list, OID_AUTO, entry->name,
 				CTLFLAG_RD, entry->stat,
diff --git a/sys/dev/ixl/if_ixlv.c b/sys/dev/ixl/if_ixlv.c
index 51d4e952965..8c4a901a663 100644
--- a/sys/dev/ixl/if_ixlv.c
+++ b/sys/dev/ixl/if_ixlv.c
@@ -2832,7 +2832,7 @@ ixlv_add_sysctls(struct ixlv_sc *sc)
 		{0,0,0}
 	};
 	struct ixl_sysctl_info *entry = ctls;
-	while (entry->stat != 0)
+	while (entry->stat != NULL)
 	{
 		SYSCTL_ADD_QUAD(ctx, child, OID_AUTO, entry->name,
 				CTLFLAG_RD, entry->stat,