diff --git a/renderdoc/driver/d3d12/d3d12_manager.cpp b/renderdoc/driver/d3d12/d3d12_manager.cpp
index 138062005..779ca76c2 100644
--- a/renderdoc/driver/d3d12/d3d12_manager.cpp
+++ b/renderdoc/driver/d3d12/d3d12_manager.cpp
@@ -2357,6 +2357,15 @@ void GPUAddressRangeTracker::GetResIDFromAddr(D3D12_GPU_VIRTUAL_ADDRESS addr, Re
       return;
 
     range = *it;
+
+    // find the largest resource containing this address - not perfect but helps with trivially bad
+    // aliases where a tiny resource and a large resource are co-situated and the larger resource
+    // needs to be used for validity
+    while((it + 1)->start <= addr && (it + 1)->realEnd > range.realEnd)
+    {
+      it++;
+      range = *it;
+    }
   }
 
   if(addr < range.start || addr >= range.realEnd)