@@ -184,7 +184,7 @@ Function Validate-DCO($headCommit, $upstreamCommit) {

     $usernameRegex='[a-zA-Z0-9][a-zA-Z0-9-]+'

     $dcoPrefix="Signed-off-by:"

-    $dcoRegex="^(Docker-DCO-1.1-)?$dcoPrefix ([^<]+) <([^<>@]+@[^<>]+)>( \\(github: ($usernameRegex)\\))?$"

+    $dcoRegex="^(Docker-DCO-1.1-)?$dcoPrefix ([^<]+) <([^<>@]+@[^<>]+)>( \(github: ($usernameRegex)\))?$"

     $counts = Invoke-Expression "git diff --numstat $upstreamCommit...$headCommit"

     if ($LASTEXITCODE -ne 0) { Throw "Failed git diff --numstat" }