diff --git a/build/jenkins/GDriveUpload b/build/jenkins/GDriveUpload
index d08c663..f702c6d 100644
--- a/build/jenkins/GDriveUpload
+++ b/build/jenkins/GDriveUpload
@@ -64,7 +64,7 @@ pipeline {
         stage('Upload If Not Exists & Always Remove Local') {
             when {
                 expression {
-                    return env.LATEST_ZIP_FILENAME != 'none'
+                    return env.LATEST_ZIP_FILENAME != 'none' && env.LATEST_ZIP_FILENAME != ''
                 }
             }
             steps {
@@ -97,7 +97,7 @@ pipeline {
         stage('Cleanup Older Files on Google Drive') {
             when {
                 expression {
-                    return env.LATEST_ZIP_FILENAME != 'none'
+                    return env.LATEST_ZIP_FILENAME != 'none' && env.LATEST_ZIP_FILENAME != ''
                 }
             }
             steps {