diff --git a/garlic/exp/nbody/weak-scaling-oss.nix b/garlic/exp/nbody/weak-scaling-oss.nix
index 07ebd08..a96d708 100644
--- a/garlic/exp/nbody/weak-scaling-oss.nix
+++ b/garlic/exp/nbody/weak-scaling-oss.nix
@@ -11,7 +11,7 @@ with stdenv.lib;
 let
   # Initial variable configuration
   varConf = with bsc; {
-    cpuMask = [ "0x1" "0x3" "0xf" "0xff" "0xffff" "0xfffffff" "0xffffffffffff" ];
+    cpuMask = [ "0x1" "0x3" "0xf" "0xff" "0xffff" "0xffffffff" "0xffffffffffff" ];
   };
 
   # Generate the complete configuration for each unit