diff --git a/sys/vm/uma_core.c b/sys/vm/uma_core.c
index fa5cdc3366f1..28b959d66b4a 100644
--- a/sys/vm/uma_core.c
+++ b/sys/vm/uma_core.c
@@ -2980,7 +2980,7 @@ uma_zalloc_debug(uma_zone_t zone, void **itemp, void *udata, int flags)
 #endif
 
 #ifdef DEBUG_MEMGUARD
-	if ((zone->uz_flags & UMA_ZONE_SMR == 0) && memguard_cmp_zone(zone)) {
+	if ((zone->uz_flags & UMA_ZONE_SMR) == 0 && memguard_cmp_zone(zone)) {
 		void *item;
 		item = memguard_alloc(zone->uz_size, flags);
 		if (item != NULL) {
@@ -3014,7 +3014,7 @@ uma_zfree_debug(uma_zone_t zone, void *item, void *udata)
 	    ("uma_zfree_debug: called with spinlock or critical section held"));
 
 #ifdef DEBUG_MEMGUARD
-	if ((zone->uz_flags & UMA_ZONE_SMR == 0) && is_memguard_addr(item)) {
+	if ((zone->uz_flags & UMA_ZONE_SMR) == 0 && is_memguard_addr(item)) {
 		if (zone->uz_dtor != NULL)
 			zone->uz_dtor(item, zone->uz_size, udata);
 		if (zone->uz_fini != NULL)