diff --git a/.agents/scripts/issue-sync-helper.sh b/.agents/scripts/issue-sync-helper.sh
index 5052be77db..898ac9f791 100755
--- a/.agents/scripts/issue-sync-helper.sh
+++ b/.agents/scripts/issue-sync-helper.sh
@@ -18,7 +18,7 @@
 
 set -euo pipefail
 
-SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)" || exit
+SCRIPT_DIR="$(cd "${BASH_SOURCE[0]%/*}" && pwd)" || exit
 source "${SCRIPT_DIR}/shared-constants.sh"
 # shellcheck source=issue-sync-lib.sh
 source "${SCRIPT_DIR}/issue-sync-lib.sh"
diff --git a/.agents/scripts/issue-sync-lib.sh b/.agents/scripts/issue-sync-lib.sh
index 09fe44b292..8b20366167 100755
--- a/.agents/scripts/issue-sync-lib.sh
+++ b/.agents/scripts/issue-sync-lib.sh
@@ -28,7 +28,7 @@ _ISSUE_SYNC_LIB_LOADED=1
 # Source shared-constants.sh to make the library self-contained.
 # Resolves SCRIPT_DIR from BASH_SOURCE so it works when sourced from any location.
 if [[ -z "${SCRIPT_DIR:-}" ]]; then
-	SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+	SCRIPT_DIR="$(cd "${BASH_SOURCE[0]%/*}" && pwd)"
 fi
 source "${SCRIPT_DIR}/shared-constants.sh"