use new conditional names
diff --git a/src/Makefile.am b/src/Makefile.am
index 068a6aa..4908ebd 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -1,4 +1,4 @@
-if XMMS
+if FLaC__HAS_XMMS
 XMMS_DIRS = plugin_xmms
 endif