diff --git a/packages/pointfree-lang/src/grammar.pegjs b/packages/pointfree-lang/src/grammar.pegjs
index 19dcff71e2..3ddc0dedff 100644
--- a/packages/pointfree-lang/src/grammar.pegjs
+++ b/packages/pointfree-lang/src/grammar.pegjs
@@ -54,7 +54,7 @@ Set
     }
 
 Map
-    = "{" body:MapPair* "}" {
+    = "{" _ body:MapPair* "}" {
         return { type: NodeType.MAP, body };
     }