diff --git a/git-codereview/doc.go b/git-codereview/doc.go
index 75082d4..0f091ee 100644
--- a/git-codereview/doc.go
+++ b/git-codereview/doc.go
@@ -218,8 +218,8 @@
 The mail command starts the code review process for the pending change.
 
 	git codereview mail [-r email,...] [-cc email,...]
-		[-diff] [-f] [-nokeycheck] [-hashtag tag,...] [-nokeycheck]
-		[-topic topic] [-trust] [-trybot] [-wip]
+		[-diff] [-f] [-hashtag tag,...] [-nokeycheck]
+		[-topic topic] [-trybot] [-wip]
 		[revision]
 
 It pushes the pending change commit in the current branch to the Gerrit code
@@ -254,9 +254,6 @@
 containing data that looks like public keys. (The most common time -nokeycheck
 is needed is when checking in test cases for cryptography libraries.)
 
-The -trust flag sets a Trust+1 vote on any uploaded changes.
-The Go project uses this vote to identify trusted commit authors.
-
 The -trybot flag sets a Run-TryBot+1 vote on any uploaded changes.
 The Go project uses this vote to start running integration tests on the CL.
 
diff --git a/git-codereview/mail.go b/git-codereview/mail.go
index 44d83d6..f8e6485 100644
--- a/git-codereview/mail.go
+++ b/git-codereview/mail.go
@@ -24,7 +24,6 @@
 		hashtagList = new(stringList) // installed below
 		noKeyCheck  = flags.Bool("nokeycheck", false, "set 'git push -o nokeycheck', to prevent Gerrit from checking for private keys")
 		topic       = flags.String("topic", "", "set Gerrit topic")
-		trust       = flags.Bool("trust", false, "add a Trust+1 vote to the CL")
 		trybot      = flags.Bool("trybot", false, "run trybots on the uploaded CLs")
 		wip         = flags.Bool("wip", false, "set the status of a change to Work-in-Progress")
 		noverify    = flags.Bool("no-verify", false, "disable presubmits")
@@ -37,7 +36,7 @@
 		fmt.Fprintf(stderr(),
 			"Usage: %s mail %s [-r reviewer,...] [-cc mail,...]\n"+
 				"\t[-f] [-diff] [-hashtag tag,...] [-nokeycheck] [-topic topic]\n"+
-				"\t[-trust] [-trybot] [-wip] [commit]\n", progName, globalFlags)
+				"\t[-trybot] [-wip] [commit]\n", progName, globalFlags)
 		exit(2)
 	}
 	flags.Parse(args)
@@ -140,10 +139,6 @@
 		refSpec += start + "topic=" + *topic
 		start = ","
 	}
-	if *trust {
-		refSpec += start + "l=Trust"
-		start = ","
-	}
 	if *trybot {
 		refSpec += start + "l=Run-TryBot"
 		start = ","