diff --git a/collect-data/action.yml b/collect-data/action.yml
index 747ac8a..ba1d387 100644
--- a/collect-data/action.yml
+++ b/collect-data/action.yml
@@ -47,7 +47,7 @@ runs:
           # read u-boot
           root_uuid=$(ssh -o StrictHostKeyChecking=no root@${{ inputs.DUT_IP }} "sed -e 's/^.*root=//' -e 's/ .*$//' < /proc/cmdline" || true)
           root_partition_device=$(ssh -o StrictHostKeyChecking=no root@${{ inputs.DUT_IP }} "blkid | tr -d '\":' | grep \"${root_uuid}\" | awk '{print \$1}' | rev | cut -c3- | rev" || true)
-          echo "UBOOT=$(ssh -o StrictHostKeyChecking=no root@${{ inputs.DUT_IP }} "dd status=none if=${root_partition_device} count=5000 | strings | grep armbian | grep U-Boot | tail -1 | grep -P \"[0-9]{4}.[0-9]{2}\" -o")" >> $GITHUB_ENV
+          echo "UBOOT=$(ssh -o StrictHostKeyChecking=no root@${{ inputs.DUT_IP }} "dd status=none if=${root_partition_device} count=5000 | strings | grep armbian | grep U-Boot | tail -1 | grep -P \"[0-9]{4}.[0-9]{2}\" -o" || true )" >> $GITHUB_ENV
           fi
 
       - name: "Armbianmonitor"