1 files changed, 1 insertions, 0 deletions
diff --git a/lib/ast.js b/lib/ast.js
index 5e1fbbb9..b1704915 100644
--- a/lib/ast.js
+++ b/lib/ast.js
@@ -985,6 +985,7 @@ TreeWalker.prototype = {
                     fn = this.parent(++i);
                     if (!fn) return false;
                 } while (!(fn instanceof AST_Lambda));
+                if (fn.name) return false;
                 self = this.parent(++i);
                 if (!self || self.TYPE != "Call" || self.expression !== fn) return false;
             } else {