diff --git a/configure.ac b/configure.ac
index 5137c694c..5598b245d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1604,6 +1604,7 @@ AC_DEFINE_UNQUOTED(SND_RENDER_PROTOS, $SND_RENDER_PROTOS)
 
 AC_SUBST(NQ_TARGETS)
 AC_SUBST(QW_TARGETS)
+AC_SUBST(PLUGIN_RPATH)
 AC_SUBST(CD_PLUGIN_TARGETS)
 AC_SUBST(CD_PLUGIN_STATIC)
 AC_SUBST(CD_PLUGIN_STATIC_LIBS)