diff --git a/plasma.conf b/plasma.conf
index f391721dc..da260ff5f 100644
--- a/plasma.conf
+++ b/plasma.conf
@@ -13,9 +13,9 @@ PBuildType="RelWithDebInfo"
 function cmake_kf5() {
   cmake -DCMAKE_BUILD_TYPE=${PBuildType} \
         -DCMAKE_INSTALL_PREFIX=${PInstallPrefix} \
-        -DLIB_INSTALL_DIR=lib \
-        -DSYSCONF_INSTALL_DIR=/etc \
-        -DLIBEXEC_INSTALL_DIR=lib \
+        -DKDE_INSTALL_LIBDIR=lib \
+        -DKDE_INSTALL_SYSCONFDIR=/etc \
+        -DKDE_INSTALL_LIBEXECDIR=lib \
         -DUDEV_RULES_INSTALL_DIR=/usr/lib/udev/rules.d \
         -DBUILD_TESTING=OFF \
         -DKDE_INSTALL_USE_QT_SYS_PATHS=ON "$@"