diff --git a/src/cmd/gc/mksys.bash b/src/cmd/gc/mksys.bash
index 42279868be..8e22567409 100644
--- a/src/cmd/gc/mksys.bash
+++ b/src/cmd/gc/mksys.bash
@@ -16,4 +16,4 @@ $a
 
 .
 w sysimport.c
-q' | ed sys.6
+q' | /bin/ed sys.6