diff --git a/Jenkinsfile b/Jenkinsfile
index 23d79bf..47afe3a 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -105,7 +105,7 @@ if ([string]::IsNullOrWhiteSpace($commitMsg)) {
     exit 0
 }
 
-$match = [regex]::Match($commitMsg, 'TG-(\d+)')
+$match = [regex]::Match($commitMsg, 'TG-(\\d+)')
 
 if (-not $match.Success) {
     Write-Host "No TG-* reference found"