diff --git a/CMakeLists.txt b/CMakeLists.txt
index a2b39ac8..f8ea59ea 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -84,5 +84,5 @@ protocol("unstable/linux-dmabuf/linux-dmabuf-unstable-v1.xml" "linux-dmabuf-unst
 install(TARGETS hyprlock)
 
 set(PAM_INSTALL_DIR "/etc/pam.d")
-install(FILES "pam/hyprlock" DESTINATION "${CMAKE_INSTALL_FULL_SYSCONFDIR}/pam.d")
+install(FILES "pam/hyprlock" DESTINATION "${PAM_INSTALL_DIR}")