1 files changed, 4 insertions, 2 deletions
diff --git a/src/kat.c b/src/kat.c
index bc2bc94..7efa7e1 100644
--- a/src/kat.c
+++ b/src/kat.c
@@ -23,8 +23,10 @@ int entry_kat(int argc, char **argv) {
       return 1;
     }
 
-    for (size_t i = 0; i < map->sb.st_size; i++) {
-      putchar(map->addr[i]);
+    if (map->sb.st_size >= 0) {
+      for (size_t i = 0; i < (size_t)map->sb.st_size; i++) {
+        putchar(map->addr[i]);
+      }
     }
 
     close_map(map);