diff --git a/Source/Shaders/RtRaygenIndirect.inl b/Source/Shaders/RtRaygenIndirect.inl
index c07546fc..ada7170f 100644
--- a/Source/Shaders/RtRaygenIndirect.inl
+++ b/Source/Shaders/RtRaygenIndirect.inl
@@ -140,7 +140,8 @@ SampleIndirect processIndirect( const uint seed, const Surface surf, out float o
     // calculate direct diffuse illumination in a hit position
     vec3 diffuse = processDirectIllumination(seed, hitSurf, 1);
 
-    if( globalUniform.indirSecondBounce != 0 )
+    // TODO: investigate why uncommenting this makes diffuse very red
+    // if( globalUniform.indirSecondBounce != 0 )
     {
         float oneOverPdf_Second;
         const vec3 bounceDir_Second = getDiffuseBounce(seed, 2, hitSurf.normal, oneOverPdf_Second);