diff --git a/.github/workflows/mikrotik_patch_7.yml b/.github/workflows/mikrotik_patch_7.yml
index 698f43a..79258ea 100644
--- a/.github/workflows/mikrotik_patch_7.yml
+++ b/.github/workflows/mikrotik_patch_7.yml
@@ -74,7 +74,7 @@ jobs:
             BUILD_TIME="${{ github.event.inputs.buildtime }}"
             RELEASE="${{ github.event.inputs.release }}"
             if [ -z "$BUILD_TIME" ]; then
-              BUILD_TIME=$(date +'%Y%m%d%H%M%S')
+              BUILD_TIME=$(date +'%s')
             fi
             if [ -z "$RELEASE" ]; then
               RELEASE=false
@@ -83,7 +83,7 @@ jobs:
             CHANNEL="${{ github.event.inputs.channel }}"
             MATRIX_JSON=$(jq -nc --arg arch "$ARCH" --arg channel "$CHANNEL" '[{arch: $arch, channel: $channel}]')
           else
-            BUILD_TIME=$(date +'%Y%m%d%H%M%S')
+            BUILD_TIME=$(date +'%s')
             RELEASE=true
             MATRIX_JSON='[
               {"arch":"x86","channel":"stable"},
diff --git a/npk.py b/npk.py
index 62532d1..ec573b1 100644
--- a/npk.py
+++ b/npk.py
@@ -228,7 +228,7 @@ class NovaPackage(Package):
     def sign(self,kcdsa_private_key:bytes,eddsa_private_key:bytes):
         import hashlib
         from mikro import mikro_kcdsa_sign,mikro_eddsa_sign
-        build_time = os.environ['BUILD_TIME'] if 'BUILD_TIME' in os.environ else None
+        build_time = os.getenv('BUILD_TIME',None)
         if len(self._packages) > 0:
             if build_time:
                 self[NpkPartID.PKG_INFO].data._build_time = int(build_time)