diff --git a/jenkins/ScanBaseImages-trivy.jenkinsfile b/jenkins/ScanBaseImages-trivy.jenkinsfile
index 13a6c29c..1268845c 100644
--- a/jenkins/ScanBaseImages-trivy.jenkinsfile
+++ b/jenkins/ScanBaseImages-trivy.jenkinsfile
@@ -83,7 +83,7 @@ pipeline {
 
 								if (! repo_empty) {
 								
-								dockerfilePath = sh(label: 'get dockerfile url', returnStdout: true, script: "curl -u $GITHUB_USER:$GITHUB_PAT -s $tree/$branch\\?recursive\\=1 | jq -r '.tree[] | select(.path | contains(\"Dockerfile\"))? |.path' || echo 'NOT_FOUND'").trim().split()
+								dockerfilePath = sh(label: 'get dockerfile url', returnStdout: true, script: "curl -u $GITHUB_USER:$GITHUB_PAT -s $tree/$branch\\?recursive\\=1 | jq -r '.tree[] | select(.path | ascii_downcase | contains(\"dockerfile\"))? |.path' || echo 'NOT_FOUND'").trim().split()
 								rawUrl =  "https://raw.githubusercontent.com/$ORG/$it/$branch"
 
 								if (!(dockerfilePath == 'NOT_FOUND')) {