--- configure.ac.orig
+++ configure.ac
@@ -254,7 +254,7 @@ AM_CONDITIONAL(ENABLE_SYSTEMD_INTEGRATIO
 
 if test x$enable_systemd_integration = xyes; then
   AC_DEFINE(PLY_ENABLE_SYSTEMD_INTEGRATION, 1, [Coordinate boot up with systemd])
-  SYSTEMD_UNIT_DIR=/lib/systemd/system
+  SYSTEMD_UNIT_DIR=$($PKG_CONFIG --variable=systemdsystemunitdir systemd)
   AC_SUBST(SYSTEMD_UNIT_DIR)
 fi