diff --git a/src/libauth/mkfile b/src/libauth/mkfile
index 7fd02e78..6e16d86b 100644
--- a/src/libauth/mkfile
+++ b/src/libauth/mkfile
@@ -1,4 +1,3 @@
-PLAN9=../..
 <$PLAN9/src/mkhdr
 
 LIB=libauth.a
diff --git a/src/libsunrpc/mkfile b/src/libsunrpc/mkfile
index 76a4d48c..52294ef6 100644
--- a/src/libsunrpc/mkfile
+++ b/src/libsunrpc/mkfile
@@ -1,4 +1,3 @@
-PLAN9=../..
 <$PLAN9/src/mkhdr
 
 PROTO=\