diff --git a/item_updater.cpp b/item_updater.cpp
index 56c5e60..b3af305 100644
--- a/item_updater.cpp
+++ b/item_updater.cpp
@@ -658,7 +658,12 @@
 
 void ItemUpdater::updateUbootEnvVars(const std::string& versionId)
 {
-    auto flashId = versions.find(versionId)->second->path();
+    auto it = versions.find(versionId);
+    if (it == versions.end())
+    {
+        return;
+    }
+    auto flashId = it->second->path();
     helper.updateUbootVersionId(flashId);
 }