1 files changed, 1 insertions, 3 deletions
diff --git a/ast.h b/ast.h
index dbc14ece..2e398125 100644
--- a/ast.h
+++ b/ast.h
@@ -52,9 +52,7 @@ typedef struct arg_ast_s {
 } arg_ast_t;
 
 typedef struct when_clause_s {
-    ast_t *tag_name;
-    ast_list_t *args;
-    ast_t *body;
+    ast_t *pattern, *body;
     struct when_clause_s *next;
 } when_clause_t;