diff --git a/net/openslp/BUILD b/net/openslp/BUILD
index ed981eb0c04..ef5c818dad1 100644
--- a/net/openslp/BUILD
+++ b/net/openslp/BUILD
@@ -1,7 +1,3 @@
-(
-
   OPTS+=" --sysconfdir=/etc/slp" &&
 
   default_build
-
-) > $C_FIFO 2>&1
diff --git a/net/openslp/PRE_BUILD b/net/openslp/PRE_BUILD
new file mode 100644
index 00000000000..69543f31fe7
--- /dev/null
+++ b/net/openslp/PRE_BUILD
@@ -0,0 +1,3 @@
+default_pre_build &&
+
+sedit 's@DOC_DIR = .*@DOC_DIR = $(prefix)/share/doc/openslp-$(VERSION)@' Makefile.in