diff --git a/packaging/bin/pki-enroll-request.sh b/packaging/bin/pki-enroll-request.sh
index 1cc039d8fe0..c1aeb6fbbf0 100755
--- a/packaging/bin/pki-enroll-request.sh
+++ b/packaging/bin/pki-enroll-request.sh
@@ -129,7 +129,7 @@ done
 common_set_conf_vars
 
 LOCK="${PKIDIR}/${CA_FILE}".pem
-LANG=C df -l "${LOCK}" 2> /dev/null | grep -q "File" || die "${LOCK} is not on a local filesystem"
+LC_ALL=C df -l "${LOCK}" 2> /dev/null | grep -q "File" || die "${LOCK} is not on a local filesystem"
 
 # Wait for lock on fd 9
 (