diff --git a/qrenderdoc/qrenderdoc_local.vcxproj b/qrenderdoc/qrenderdoc_local.vcxproj
index af9b32dde..3d6099836 100644
--- a/qrenderdoc/qrenderdoc_local.vcxproj
+++ b/qrenderdoc/qrenderdoc_local.vcxproj
@@ -123,6 +123,11 @@
       <Optimization>Disabled</Optimization>
     </ClCompile>
   </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)'=='QTDebug'">
+    <ClCompile>
+      <Optimization>Disabled</Optimization>
+    </ClCompile>
+  </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)'=='Release'">
     <ClCompile>
       <Optimization>MaxSpeed</Optimization>