diff --git a/libraries/render-utils/src/LightClusters.cpp b/libraries/render-utils/src/LightClusters.cpp
index b7ab88f119..6d6ea005d5 100644
--- a/libraries/render-utils/src/LightClusters.cpp
+++ b/libraries/render-utils/src/LightClusters.cpp
@@ -74,7 +74,7 @@ void FrustumGrid::generateGridPlanes(Planes& xPlanes, Planes& yPlanes, Planes& z
 
 #include "DeferredLightingEffect.h"
 #ifdef Q_OS_MAC
-const glm::uvec4 LightClusters::MAX_GRID_DIMENSIONS { 8, 8, 8, 4096 };
+const glm::uvec4 LightClusters::MAX_GRID_DIMENSIONS { 16, 16, 16, 16384 };
 #else
 const glm::uvec4 LightClusters::MAX_GRID_DIMENSIONS { 32, 32, 31, 16384 };
 #endif