1 files changed, 1 insertions, 1 deletions
diff --git a/shallow.c b/shallow.c
index 71163bf3d7..4d554caf8d 100644
--- a/shallow.c
+++ b/shallow.c
@@ -389,7 +389,7 @@ static void paint_down(struct paint_info *info, const unsigned char *sha1,
 	unsigned int i, nr;
 	struct commit_list *head = NULL;
 	int bitmap_nr = (info->nr_bits + 31) / 32;
-	int bitmap_size = bitmap_nr * sizeof(uint32_t);
+	size_t bitmap_size = st_mult(bitmap_nr, sizeof(uint32_t));
 	uint32_t *tmp = xmalloc(bitmap_size); /* to be freed before return */
 	uint32_t *bitmap = paint_alloc(info);
 	struct commit *c = lookup_commit_reference_gently(sha1, 1);