diff --git a/pkgs/development/libraries/gnu-config/default.nix b/pkgs/development/libraries/gnu-config/default.nix
index a08997ea2cd..0b765019992 100644
--- a/pkgs/development/libraries/gnu-config/default.nix
+++ b/pkgs/development/libraries/gnu-config/default.nix
@@ -20,6 +20,8 @@ in stdenv.mkDerivation {
     mkdir -p $out
     cp ${configGuess} $out/config.guess
     cp ${configSub} $out/config.sub
+
+    chmod +x $out/config.*
   '';
 
   meta = with lib; {