diff --git a/signing/sign.sh b/signing/sign.sh
index ecd690a951..717ff31d8d 100755
--- a/signing/sign.sh
+++ b/signing/sign.sh
@@ -4,19 +4,19 @@ set -ex
 DATA_DIR="$(readlink -f "$1")"
 KEYS_DIR="$(readlink -f "$(dirname "$0")")"
 
-gpg2 --verify "${DATA_DIR}/coreos_production_update.bin.bz2.sig"
-gpg2 --verify "${DATA_DIR}/coreos_production_image.vmlinuz.sig"
-gpg2 --verify "${DATA_DIR}/coreos_production_update.zip.sig"
-bunzip2 --keep "${DATA_DIR}/coreos_production_update.bin.bz2"
-unzip "${DATA_DIR}/coreos_production_update.zip" -d "${DATA_DIR}"
+gpg2 --verify "${DATA_DIR}/flatcar_production_update.bin.bz2.sig"
+gpg2 --verify "${DATA_DIR}/flatcar_production_image.vmlinuz.sig"
+gpg2 --verify "${DATA_DIR}/flatcar_production_update.zip.sig"
+bunzip2 --keep "${DATA_DIR}/flatcar_production_update.bin.bz2"
+unzip "${DATA_DIR}/flatcar_production_update.zip" -d "${DATA_DIR}"
 
 export PATH="${DATA_DIR}:${PATH}"
 
 cd "${DATA_DIR}"
 ./core_sign_update \
-    --image "${DATA_DIR}/coreos_production_update.bin" \
-    --kernel "${DATA_DIR}/coreos_production_image.vmlinuz" \
-    --output "${DATA_DIR}/coreos_production_update.gz" \
+    --image "${DATA_DIR}/flatcar_production_update.bin" \
+    --kernel "${DATA_DIR}/flatcar_production_image.vmlinuz" \
+    --output "${DATA_DIR}/flatcar_production_update.gz" \
     --private_keys "${KEYS_DIR}/devel.key.pem+pkcs11:object=CoreOS_Update_Signing_Key;type=private" \
     --public_keys  "${KEYS_DIR}/devel.pub.pem+${KEYS_DIR}/prod-2.pub.pem" \
     --keys_separator "+"