diff --git a/CMakeLists.txt b/CMakeLists.txt
index 683fba874..5942e6354 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -250,7 +250,7 @@ install(
   FILES
       com.github.calamares.calamares.policy
   DESTINATION
-      "${CMAKE_INSTALL_PREFIX}${POLKITQT-1_POLICY_FILES_INSTALL_DIR}"
+      "${POLKITQT-1_POLICY_FILES_INSTALL_DIR}"
 )
 
 install(