diff --git a/ci/apps/tasks/open-charts-pr.sh b/ci/apps/tasks/open-charts-pr.sh
index 4ff9ba2246..b363693234 100755
--- a/ci/apps/tasks/open-charts-pr.sh
+++ b/ci/apps/tasks/open-charts-pr.sh
@@ -40,7 +40,7 @@ for commit in $(git log --format="%H" ${old_ref}..${ref}); do
   changed_files=$(git diff-tree --no-commit-id --name-only -r $commit)
 
   for file in ${changed_files[@]}; do
-    if [[ " ${app_src_files[*]} " == *"$file"* ]]; then
+    if printf '%s\n' "${app_src_files[@]}" | grep -Fxq "$file"; then
       relevant_commits+=($commit)
       break
     fi
diff --git a/ci/core/tasks/open-charts-pr.sh b/ci/core/tasks/open-charts-pr.sh
index 4ff9ba2246..b363693234 100755
--- a/ci/core/tasks/open-charts-pr.sh
+++ b/ci/core/tasks/open-charts-pr.sh
@@ -40,7 +40,7 @@ for commit in $(git log --format="%H" ${old_ref}..${ref}); do
   changed_files=$(git diff-tree --no-commit-id --name-only -r $commit)
 
   for file in ${changed_files[@]}; do
-    if [[ " ${app_src_files[*]} " == *"$file"* ]]; then
+    if printf '%s\n' "${app_src_files[@]}" | grep -Fxq "$file"; then
       relevant_commits+=($commit)
       break
     fi
diff --git a/ci/tasks/open-charts-pr.sh b/ci/tasks/open-charts-pr.sh
index 90fda5dfe1..0dcbf47031 100755
--- a/ci/tasks/open-charts-pr.sh
+++ b/ci/tasks/open-charts-pr.sh
@@ -41,7 +41,7 @@ for commit in $(git log --format="%H" ${old_ref}..${ref}); do
   changed_files=$(git diff-tree --no-commit-id --name-only -r $commit)
 
   for file in ${changed_files[@]}; do
-    if [[ " ${app_src_files[*]} " == *"$file"* ]]; then
+    if printf '%s\n' "${app_src_files[@]}" | grep -Fxq "$file"; then
       relevant_commits+=($commit)
       break
     fi