diff --git a/indra/cmake/GooglePerfTools.cmake b/indra/cmake/GooglePerfTools.cmake
index 73b3642ae646c3e5ff493157e92d32b9fcb7c9fb..09501e0406e637ceea1e1c92d10291504e9fe2da 100644
--- a/indra/cmake/GooglePerfTools.cmake
+++ b/indra/cmake/GooglePerfTools.cmake
@@ -3,7 +3,7 @@ include(Prebuilt)
 
 # If you want to enable or disable TCMALLOC in viewer builds, this is the place.
 # set ON or OFF as desired.
-set (USE_TCMALLOC OFF)
+set (USE_TCMALLOC ON)
 
 if (STANDALONE)
   include(FindGooglePerfTools)