diff --git a/CMakeLists.txt b/CMakeLists.txt
index c7d99535..d8b1c925 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -77,7 +77,7 @@ if(UNIX)  # APPLE, LINUX, FREE_BSD
        endif()
 
        if(NOT DEFINED LINUX_SYSTEMD_UNITDIR)
-           set(LINUX_SYSTEMD_UNITDIR /usr/lib/systemd/system)
+         set(LINUX_SYSTEMD_UNITDIR "${CMAKE_INSTALL_LIBDIR}/systemd/system")
        endif()
 
        if(LINUX_SYSTEMD)