diff --git a/pkgs/desktops/xfce/core/xfce4-dev-tools/setup-hook.sh b/pkgs/desktops/xfce/core/xfce4-dev-tools/setup-hook.sh
index 57a7a6c8995a..586d6f21e160 100644
--- a/pkgs/desktops/xfce/core/xfce4-dev-tools/setup-hook.sh
+++ b/pkgs/desktops/xfce/core/xfce4-dev-tools/setup-hook.sh
@@ -1,9 +1,3 @@
-xdtEnvHook() {
-    addToSearchPath ACLOCAL_PATH $1/share/aclocal
-}
-
-envHooks+=(xdtEnvHook)
-
 xdtAutogenPhase() {
     mkdir -p m4
     NOCONFIGURE=1 xdt-autogen