--- a/mcabber/configure.ac	Tue Mar 15 17:31:59 2016 +0200
+++ b/mcabber/configure.ac	Tue Mar 22 08:01:42 2016 +0100
@@ -261,7 +261,8 @@
 fi
 
 # Export $libexecdir to the source tree
-AC_DEFINE_DIR(PKGLIB_DIR, "${libdir}/${PACKAGE}", [Modules directory])
+pkglibdir=${libdir}/${PACKAGE}
+AC_DEFINE_DIR(PKGLIB_DIR, pkglibdir, [Modules directory])
 
 AC_ARG_ENABLE(debug,
     AC_HELP_STRING([--enable-debug], [add development compilation options]),