diff --git a/src/d3d9/d3d9_device.cpp b/src/d3d9/d3d9_device.cpp
index 689ed4382..f595e909e 100644
--- a/src/d3d9/d3d9_device.cpp
+++ b/src/d3d9/d3d9_device.cpp
@@ -4163,6 +4163,9 @@ namespace dxvk {
     if (!m_d3d9Options.allowLockFlagReadonly)
       Flags &= ~D3DLOCK_READONLY;
 
+    if (!m_d3d9Options.allowDiscard)
+      Flags &= ~D3DLOCK_DISCARD;
+
     auto& desc = *pResource->Desc();
 
     // Ignore DISCARD if NOOVERWRITE is set
diff --git a/src/d3d9/d3d9_options.cpp b/src/d3d9/d3d9_options.cpp
index 61134880e..1ed1aaff8 100644
--- a/src/d3d9/d3d9_options.cpp
+++ b/src/d3d9/d3d9_options.cpp
@@ -66,6 +66,7 @@ namespace dxvk {
 
     this->forceAspectRatio      = config.getOption<std::string>("d3d9.forceAspectRatio",   "");
     this->allowDoNotWait        = config.getOption<bool>       ("d3d9.allowDoNotWait",     true);
+    this->allowDiscard          = config.getOption<bool>       ("d3d9.allowDiscard",       true);
 
     // If we are not Nvidia, enable general hazards.
     this->generalHazards = adapter == nullptr || !adapter->matchesDriver(DxvkGpuVendor::Nvidia, VK_DRIVER_ID_NVIDIA_PROPRIETARY_KHR, 0, 0);
diff --git a/src/d3d9/d3d9_options.h b/src/d3d9/d3d9_options.h
index 7ead26d5e..582898b71 100644
--- a/src/d3d9/d3d9_options.h
+++ b/src/d3d9/d3d9_options.h
@@ -122,6 +122,9 @@ namespace dxvk {
 
     /// Allow D3DLOCK_DONOTWAIT
     bool allowDoNotWait;
+
+    /// Allow D3DLOCK_DISCARD
+    bool allowDiscard;
   };
 
 }
\ No newline at end of file