diff --git a/src/pcm/ext/Makefile.am b/src/pcm/ext/Makefile.am
index 14dc396b..8e39d559 100644
--- a/src/pcm/ext/Makefile.am
+++ b/src/pcm/ext/Makefile.am
@@ -20,6 +20,8 @@ all: help
 
 all-am: help
 
+all-redirect: help
+
 install-am: help
 
 hand-install: install-exec-am