diff --git a/src/main.c b/src/main.c
index e9fc492..f9c4407 100644
--- a/src/main.c
+++ b/src/main.c
@@ -92,10 +92,10 @@ int main(int argc, char **argv)
 
     hash_map_free(&vars);
 
-    ast_free(&command_ast);
-
     if (command_ast == NULL)
         return ERR_INPUT_PROCESSING;
 
+    ast_free(&command_ast);
+
     return return_code;
 }