diff --git a/regressions/Makefile b/regressions/Makefile
index affeb83..005314c 100644
--- a/regressions/Makefile
+++ b/regressions/Makefile
@@ -9,6 +9,7 @@ DIR=backoff	\
     hp		\
     hs		\
     ht		\
+    pflock	\
     pr		\
     queue	\
     ring	\