diff --git a/src/cmd/godoc/Makefile b/src/cmd/godoc/Makefile
index 06a18be707e..69341fa4e63 100644
--- a/src/cmd/godoc/Makefile
+++ b/src/cmd/godoc/Makefile
@@ -18,5 +18,6 @@ GOFILES=\
 	snippet.go\
 	spec.go\
 	utils.go\
+	zip.go\
 
 include ../../Make.cmd