diff --git a/modules/src/malloc/log.c b/modules/src/malloc/log.c
index 3d6bce96d..f8dee7d65 100644
--- a/modules/src/malloc/log.c
+++ b/modules/src/malloc/log.c
@@ -25,7 +25,7 @@ link_free_chunk(ml)
 	register unsigned int n = size_of(ml);
 	register mallink *ml1;
 
-	assert(n < (1 << LOG_MAX_SIZE));
+	assert(n < (1L << LOG_MAX_SIZE));
 
 	do {
 		n >>= 1;
@@ -61,7 +61,7 @@ unlink_free_chunk(ml)
 		register mallink **mlp = &free_list[-1];
 		register unsigned int n = size_of(ml);
 
-		assert(n < (1 << LOG_MAX_SIZE));
+		assert(n < (1L << LOG_MAX_SIZE));
 		do {
 			n >>= 1;
 			mlp++;
diff --git a/modules/src/malloc/mal.c b/modules/src/malloc/mal.c
index 253c7e581..7043f19e8 100644
--- a/modules/src/malloc/mal.c
+++ b/modules/src/malloc/mal.c
@@ -68,7 +68,7 @@ malloc(n)
 		*/
 		register unsigned int n1 = n;
 
-		assert(n1 < (1 << LOG_MAX_SIZE));
+		assert(n1 < (1L << LOG_MAX_SIZE));
 		min_class = 0;
 
 		do {