diff --git a/fastboot/device/utility.cpp b/fastboot/device/utility.cpp
index 07ad902..f9267e0 100644
--- a/fastboot/device/utility.cpp
+++ b/fastboot/device/utility.cpp
@@ -204,7 +204,12 @@
 }
 
 bool GetDeviceLockStatus() {
-    return android::base::GetProperty("ro.boot.verifiedbootstate", "") != "orange";
+    std::string cmdline;
+    // Return lock status true if unable to read kernel command line.
+    if (!android::base::ReadFileToString("/proc/cmdline", &cmdline)) {
+        return true;
+    }
+    return cmdline.find("androidboot.verifiedbootstate=orange") == std::string::npos;
 }
 
 bool UpdateAllPartitionMetadata(FastbootDevice* device, const std::string& super_name,