diff --git a/renderdoc/driver/d3d12/d3d12_resources.cpp b/renderdoc/driver/d3d12/d3d12_resources.cpp
index 9b211db62..bf7acb8da 100644
--- a/renderdoc/driver/d3d12/d3d12_resources.cpp
+++ b/renderdoc/driver/d3d12/d3d12_resources.cpp
@@ -1254,7 +1254,7 @@ void D3D12ShaderExportDatabase::InheritExport(const rdcstr &exportName,
       memcpy(ownExports.back().real, identifier, sizeof(ShaderIdentifier));
 
     // and re-point this to point to ourselves when queried as we have the best data for it.
-    wrappedIdentifiers.back() = {objectOriginalId, (uint32_t)ownExports.size()};
+    wrappedIdentifiers.back() = {objectOriginalId, (uint32_t)ownExports.size() - 1};
 
     // if this is an incomplete hitgroup, also grab the hitgroup component data
     if(exportLookups.back().hitgroup)