diff --git a/config.sun4.mk b/config.sun4.mk
index 82c99dc7a..ad02adf57 100644
--- a/config.sun4.mk
+++ b/config.sun4.mk
@@ -9,4 +9,5 @@ DIRS =	src/libCom \
 	src/dct \
 	src/util \
 	src/sequencer \
-	src/dbtools
+	src/dbtools \
+	rec