diff --git a/src/ast.c b/src/ast.c
index 88ea491..23121ff 100644
--- a/src/ast.c
+++ b/src/ast.c
@@ -9,8 +9,10 @@
 
 ast* astCreate (astTag tag, tokenLocation location) {
     ast* Node = calloc(1, sizeof(ast));
-    Node->tag = tag;
-    Node->location = location;
+    if (Node) {
+        Node->tag = tag;
+        Node->location = location;
+    }
     return Node;
 }