diff --git a/renderdoc/driver/shaders/dxbc/dx_debug.cpp b/renderdoc/driver/shaders/dxbc/dx_debug.cpp
index df38db5ab..a33292bff 100644
--- a/renderdoc/driver/shaders/dxbc/dx_debug.cpp
+++ b/renderdoc/driver/shaders/dxbc/dx_debug.cpp
@@ -687,6 +687,7 @@ void CreateInputFetcher(const DXBC::DXBCContainer *dxbc, const DXBC::DXBCContain
 struct Inputs
 {
 };
+void CopyInputs(out Inputs OUT, in Inputs IN) {}
 )";
   }
   else