diff --git a/Source/Engine/ShadowsOfMordor/Builder.Jobs.cpp b/Source/Engine/ShadowsOfMordor/Builder.Jobs.cpp
index 5628a2471..169036aa9 100644
--- a/Source/Engine/ShadowsOfMordor/Builder.Jobs.cpp
+++ b/Source/Engine/ShadowsOfMordor/Builder.Jobs.cpp
@@ -423,7 +423,7 @@ void ShadowsOfMordor::Builder::onJobRender(GPUContext* context)
 #endif
 
         // Report progress
-        float hemispheresProgress = static_cast<float>(_workerStagePosition1) / lightmapEntry.Hemispheres.Count();
+        float hemispheresProgress = static_cast<float>(_workerStagePosition1) / Math::Max(lightmapEntry.Hemispheres.Count(), 1);
         float lightmapsProgress = static_cast<float>(_workerStagePosition0 + hemispheresProgress) / scene->Lightmaps.Count();
         float bouncesProgress = static_cast<float>(_giBounceRunningIndex) / _bounceCount;
         reportProgress(BuildProgressStep::RenderHemispheres, lightmapsProgress / _bounceCount + bouncesProgress);