2 files changed, 3 insertions, 3 deletions
diff --git a/alloc.h b/alloc.h
index 7d23414..fa0d391 100644
--- a/alloc.h
+++ b/alloc.h
@@ -13,9 +13,9 @@
 static inline size_t
 z_mult_no_oflow_(size_t n, size_t size)
 {
-	if (size != 0 && n > SIZE_MAX / size) {
+	if (size != 0 && n > ULONG_MAX / size) {
 		fprintf(stderr,
-		    "w3m: overflow in malloc, %zu*%zu\n", n, size);
+		    "w3m: overflow in malloc, %lu*%lu\n", (unsigned long)n, (unsigned long)size);
 		exit(1);
 	}
 	return n * size;
diff --git a/main.c b/main.c
index cb15c9f..d37b243 100644
--- a/main.c
+++ b/main.c
@@ -386,7 +386,7 @@ make_optional_header_string(char *s)
 static void *
 die_oom(size_t bytes)
 {
-    fprintf(stderr, "Out of memory: %zu bytes unavailable!\n", bytes);
+    fprintf(stderr, "Out of memory: %lu bytes unavailable!\n", (unsigned long)bytes);
     exit(1);
 }