diff --git a/cfg/gnu.cfg b/cfg/gnu.cfg
index 5451c0388..ac603e7f2 100644
--- a/cfg/gnu.cfg
+++ b/cfg/gnu.cfg
@@ -404,8 +404,7 @@
     <arg nr="1">
       <not-null/>
     </arg>
-    <arg nr="2"/>
-  </function>  
+  </function>
   <!-- see https://gcc.gnu.org/onlinedocs/gcc/Other-Builtins.html -->
   <define name="__builtin_expect(X,Y)" value="(X)"/>
   <!-- see http://kernelnewbies.org/FAQ/LikelyUnlikely -->