diff --git a/src/bin/sysinfo.c b/src/bin/sysinfo.c
index cd49d521e0..d9e2e65c56 100644
--- a/src/bin/sysinfo.c
+++ b/src/bin/sysinfo.c
@@ -517,10 +517,10 @@ dump_cpus(system_info *info)
 static void
 dump_mem(system_info *info)
 {
-	printf("%10ld bytes free      (used/max %10ld / %10ld)\n",
-		B_PAGE_SIZE * (info->max_pages - info->used_pages),
-		B_PAGE_SIZE * info->used_pages,
-		B_PAGE_SIZE * info->max_pages);
+	printf("%10lu bytes free      (used/max %10lu / %10lu)\n",
+		B_PAGE_SIZE * (uint32)(info->max_pages - info->used_pages)),
+		B_PAGE_SIZE * (uint32)info->used_pages,
+		B_PAGE_SIZE * (uint32)info->max_pages);
 }