1 files changed, 2 insertions, 1 deletions
diff --git a/bin/9.rc b/bin/9.rc
index 1fb75d23..354976d3 100755
--- a/bin/9.rc
+++ b/bin/9.rc
@@ -1,6 +1,7 @@
 #!/usr/local/plan9/bin/rc
 
-PLAN9=/usr/local/plan9
+if(~ $#PLAN9 0)
+	PLAN9=/usr/local/plan9
 if(! ~ $path(1) $PLAN9/bin)
 	path=($PLAN9/bin $path)