diff --git a/renderdoc/driver/d3d12/d3d12_pixelhistory.cpp b/renderdoc/driver/d3d12/d3d12_pixelhistory.cpp
index 5f7d61d5a..e7bf445c6 100644
--- a/renderdoc/driver/d3d12/d3d12_pixelhistory.cpp
+++ b/renderdoc/driver/d3d12/d3d12_pixelhistory.cpp
@@ -1420,7 +1420,8 @@ struct D3D12TestsFailedCallback : public D3D12PixelHistoryCallback
     D3D12_EXPANDED_PIPELINE_STATE_STREAM_DESC pipeDesc;
     origPSO->Fill(pipeDesc);
 
-    if(pipeDesc.DepthStencilState.DepthBoundsTestEnable)
+    // When a depth buffer is not bound (e.g. when TIR is enabled), the Depth Bounds Test must always pass.
+    if(pipeDesc.DepthStencilState.DepthBoundsTestEnable && pipeState.GetDSVID() != ResourceId())
       m_EventDepthBounds[eid] = {pipeState.depthBoundsMin, pipeState.depthBoundsMax};
     else
       m_EventDepthBounds[eid] = {};
diff --git a/renderdoc/driver/vulkan/vk_pixelhistory.cpp b/renderdoc/driver/vulkan/vk_pixelhistory.cpp
index 12ca78961..58b91c039 100644
--- a/renderdoc/driver/vulkan/vk_pixelhistory.cpp
+++ b/renderdoc/driver/vulkan/vk_pixelhistory.cpp
@@ -4868,8 +4868,10 @@ rdcarray<PixelModification> VulkanReplay::PixelHistory(rdcarray<EventUsage> even
 
         if((history[h].preMod.depth < depthBounds.first ||
             history[h].preMod.depth > depthBounds.second) &&
-           depthBounds.second > depthBounds.first)
+           depthBounds.second > depthBounds.first && dfmt != VK_FORMAT_UNDEFINED)
+        {
           history[h].depthBoundsFailed = true;
+        }
       }
     }