diff --git a/packer-image-buid.groovy b/packer-image-buid.groovy
index a87918f..87ef652 100644
--- a/packer-image-buid.groovy
+++ b/packer-image-buid.groovy
@@ -135,7 +135,7 @@
             }
 
             stage("Build Instance") {
-                def _packer_args = "${job_env.get(PACKER_ARGS, '')}"
+                def _packer_args = job_env.get('PACKER_ARGS', '')
                 def _packer_log = "${workspace}/packer.log"
                 // clean old log, for correct status grepping
                 if (fileExists(_packer_log)) {
@@ -237,8 +237,8 @@
                             // collect artifacts
                             // TODO make it possible, process multiply artifacts by one run.
                             dir('images/') {
-                                sh(script: 'find .', returnStdout: true)
-                                def _files = findFiles(glob: "*qemu*/${imageName}*")
+                                sh(script: 'find .')
+                                def _files = findFiles(glob: "*qemu*/*${imageName}*.qcow2")
                                 if (_files.size() > 1) {
                                     common.warningMsg("Multiply artifacts detected!Only first one will be processed!")
                                 } else if (_files.size() == 0) {