diff --git a/lib/mm/pool-debug.c b/lib/mm/pool-debug.c
index 171154093..6c1978a2c 100644
--- a/lib/mm/pool-debug.c
+++ b/lib/mm/pool-debug.c
@@ -79,7 +79,7 @@ static struct block *_new_block(size_t s, unsigned alignment)
 	struct block *b = dbg_malloc(len);
 
 	if (!b) {
-		stack;
+		log_err("Out of memory.");
 		return NULL;
 	}
 
diff --git a/lib/mm/pool-fast.c b/lib/mm/pool-fast.c
index cdd082a30..7f2bc8907 100644
--- a/lib/mm/pool-fast.c
+++ b/lib/mm/pool-fast.c
@@ -222,8 +222,10 @@ struct chunk *_new_chunk(struct pool *p, size_t s)
 		c = p->spare_chunk;
 		p->spare_chunk = 0;
 	} else {
-		if (!(c = dbg_malloc(s)))
+		if (!(c = dbg_malloc(s))) {
+			log_err("Out of memory.");
 			return NULL;
+		}
 
 		c->end = (char *) c + s;
 	}