1 files changed, 1 insertions, 0 deletions

diff --git a/src/ast.c b/src/ast.c
index cdfd9a0..b329d12 100644
--- a/src/ast.c
+++ b/src/ast.c
@@ -1,4 +1,5 @@
 #include "ast.h"
+#include <stdlib.h>
 #include <string.h>
 #include "common.h"
 #include "preprocess.h"