diff --git a/src/cmd/godoc/godoc.go b/src/cmd/godoc/godoc.go
index 9cc194435e..176e33949f 100644
--- a/src/cmd/godoc/godoc.go
+++ b/src/cmd/godoc/godoc.go
@@ -100,7 +100,7 @@ var (
 )
 
 
-func initRoots() {
+func init() {
 	goroot = os.Getenv("GOROOT")
 	if goroot == "" {
 		goroot = pathutil.Join(os.Getenv("HOME"), "go")
diff --git a/src/cmd/godoc/main.go b/src/cmd/godoc/main.go
index ef08551ce7..4bff23f0df 100644
--- a/src/cmd/godoc/main.go
+++ b/src/cmd/godoc/main.go
@@ -152,7 +152,6 @@ func main() {
 		log.Exitf("negative tabwidth %d", *tabwidth)
 	}
 
-	initRoots()
 	readTemplates()
 
 	if *httpaddr != "" {