diff --git a/LibC/stdio.h b/LibC/stdio.h
index 990559f1101..2413f236ba3 100644
--- a/LibC/stdio.h
+++ b/LibC/stdio.h
@@ -30,7 +30,7 @@ struct __STDIO_FILE {
     char* buffer;
     size_t buffer_size;
     size_t buffer_index;
-    bool have_ungotten;
+    int have_ungotten;
     char ungotten;
     char default_buffer[BUFSIZ];
 };