diff --git a/app/src/main/cpp/skyline/services/nvdrv/core/nvmap.cpp b/app/src/main/cpp/skyline/services/nvdrv/core/nvmap.cpp
index 214f40f6..47286b7c 100644
--- a/app/src/main/cpp/skyline/services/nvdrv/core/nvmap.cpp
+++ b/app/src/main/cpp/skyline/services/nvdrv/core/nvmap.cpp
@@ -40,12 +40,12 @@ namespace skyline::service::nvdrv::core {
     }
 
     PosixResult NvMap::Handle::Duplicate(bool internalSession) {
+        std::scoped_lock lock(mutex);
+
         // Unallocated handles cannot be duplicated as duplication requires memory accounting (in HOS)
         if (!allocated) [[unlikely]]
             return PosixResult::InvalidArgument;
 
-        std::scoped_lock lock(mutex);
-
         // If we internally use FromId the duplication tracking of handles won't work accurately due to us not implementing
         // per-process handle refs.
         if (internalSession)