diff --git a/hack/release/chart-update.sh b/hack/release/chart-update.sh
index a1dad8d..4214b48 100755
--- a/hack/release/chart-update.sh
+++ b/hack/release/chart-update.sh
@@ -3,7 +3,7 @@ set -ex
 
 # github tag e.g v1.2.3
 GITHUB_TAG=${GITHUB_TAG:-}
-# github repo owner e.g mellanox
+# github repo owner e.g Mellanox
 GITHUB_REPO_OWNER=${GITHUB_REPO_OWNER:-}
 
 BASE=${PWD}
@@ -28,7 +28,7 @@ OPERATOR_TAG=${GITHUB_TAG}
 # patch values.yaml in-place
 
 # maintenance-operator image:
-OPERATOR_REPO=${GITHUB_REPO_OWNER} # this is used to allow to release maintenance-operator from forks
+OPERATOR_REPO=$(echo ${GITHUB_REPO_OWNER} | tr '[:upper:]' '[:lower:]') # this is used to allow to release maintenance-operator from forks
 $YQ_CMD -i ".operator.image.repository = \"ghcr.io/${OPERATOR_REPO}/maintenance-operator\"" ${HELM_VALUES}
 
 # patch Chart.yaml in-place