diff --git a/pkgs/development/libraries/dbus/default.nix b/pkgs/development/libraries/dbus/default.nix
index 04f08be8853b..98fb6c682b1a 100644
--- a/pkgs/development/libraries/dbus/default.nix
+++ b/pkgs/development/libraries/dbus/default.nix
@@ -21,7 +21,7 @@ in rec {
     name = "dbus-tools-" + version;
     inherit src configureFlags;
     buildInputs = [pkgconfig expat libs]
-      ++ if useX11 then [libX11 libICE libSM] else [];
+      ++ (if useX11 then [libX11 libICE libSM] else []);
     postConfigure = "cd tools";
 
     NIX_LDFLAGS = "-ldbus-1";