diff --git a/std/traits.d b/std/traits.d
index 1a79c8dc02e..5791cc00d9c 100644
--- a/std/traits.d
+++ b/std/traits.d
@@ -563,7 +563,7 @@ private template fqnSym(alias T)
 
         if (s.skipOver("package ") || s.skipOver("module "))
             return s;
-        return s.findSplit("(")[0];
+        return s.findSplit("(").pre;
     }
     enum fqnSym = parentPrefix ~ adjustIdent(__traits(identifier, T));
 }