diff --git a/src/cmd/go/alldocs.go b/src/cmd/go/alldocs.go
index bad2b7f16ef..ab61017c4eb 100644
--- a/src/cmd/go/alldocs.go
+++ b/src/cmd/go/alldocs.go
@@ -293,7 +293,7 @@
 //
 // Usage:
 //
-// 	go doc [-u] [-c] [package|[package.]symbol[.methodOrField]]
+// 	go doc [doc flags] [package|[package.]symbol[.methodOrField]]
 //
 // Doc prints the documentation comments associated with the item identified by its
 // arguments (a package, const, func, type, var, method, or struct field)
diff --git a/src/cmd/go/internal/doc/doc.go b/src/cmd/go/internal/doc/doc.go
index 67f76e22563..8580a5dc4d2 100644
--- a/src/cmd/go/internal/doc/doc.go
+++ b/src/cmd/go/internal/doc/doc.go
@@ -13,7 +13,7 @@ import (
 
 var CmdDoc = &base.Command{
 	Run:         runDoc,
-	UsageLine:   "go doc [-u] [-c] [package|[package.]symbol[.methodOrField]]",
+	UsageLine:   "go doc [doc flags] [package|[package.]symbol[.methodOrField]]",
 	CustomFlags: true,
 	Short:       "show documentation for package or symbol",
 	Long: `