diff --git a/renderdoc/api/replay/structured_data.h b/renderdoc/api/replay/structured_data.h
index e6393afd1..f26a3160e 100644
--- a/renderdoc/api/replay/structured_data.h
+++ b/renderdoc/api/replay/structured_data.h
@@ -1043,6 +1043,13 @@ protected:
     }
   }
 
+  void Detach()
+  {
+    PopulateAllChildren();
+    for(size_t i = 0; i < data.children.size(); i++)
+      data.children[i]->Detach();
+  }
+
   void PopulateAllChildren() const
   {
     if(m_Lazy)
@@ -1087,6 +1094,9 @@ private:
   template <class SerialiserType>
   friend void DoSerialise(SerialiserType &ser, SDObject &el, StructuredObjectList &children);
 
+  // SDFile should be a friend so it can detach
+  friend struct SDFile;
+
   void DeleteLazyGenerator() const
   {
     if(m_Lazy)
@@ -1653,6 +1663,15 @@ public:
     std::swap(version, other.version);
   }
 
+  DOCUMENT(R"(Prepares the SDFile to remove any possible dependencies on what
+created it.
+)");
+  void Detach()
+  {
+    for(SDChunk *c : chunks)
+      c->Detach();
+  }
+
 protected:
   SDFile(const SDFile &) = delete;
   SDFile &operator=(const SDFile &) = delete;
diff --git a/renderdoc/replay/dummy_driver.cpp b/renderdoc/replay/dummy_driver.cpp
index b61450d74..8e0ad5ac9 100644
--- a/renderdoc/replay/dummy_driver.cpp
+++ b/renderdoc/replay/dummy_driver.cpp
@@ -44,6 +44,8 @@ DummyDriver::DummyDriver(IReplayDriver *original, const rdcarray<const ShaderRef
   m_WindowSystems = original->GetSupportedWindowSystems();
   m_CustomEncodings = original->GetCustomShaderEncodings();
   m_CustomPrefixes = original->GetCustomShaderSourcePrefixes();
+
+  sdfile->Detach();
 }
 
 DummyDriver::~DummyDriver()