diff --git a/src/nvtt/CMakeLists.txt b/src/nvtt/CMakeLists.txt
index 8b0a8ee..987c185 100644
--- a/src/nvtt/CMakeLists.txt
+++ b/src/nvtt/CMakeLists.txt
@@ -28,8 +28,8 @@ SET(NVTT_SRCS
     cuda/CudaMath.h
     cuda/BitmapTable.h
     cuda/CudaCompressorDXT.h cuda/CudaCompressorDXT.cpp
-    ${NV_SOURCE_DIR}/extern/rg_etc1_v104/rg_etc1.h ${NV_SOURCE_DIR}/extern/rg_etc1_v104/rg_etc1.cpp
-    ${NV_SOURCE_DIR}/extern/etcpack/etcpack.cxx ${NV_SOURCE_DIR}/extern/etcpack/etcdec.cxx
+    #${NV_SOURCE_DIR}/extern/rg_etc1_v104/rg_etc1.h ${NV_SOURCE_DIR}/extern/rg_etc1_v104/rg_etc1.cpp
+    #${NV_SOURCE_DIR}/extern/etcpack/etcpack.cxx ${NV_SOURCE_DIR}/extern/etcpack/etcdec.cxx
     )
 
 IF (CUDA_FOUND)
@@ -44,7 +44,7 @@ INCLUDE_DIRECTORIES(${CMAKE_CURRENT_SOURCE_DIR})
 INCLUDE_DIRECTORIES(${NV_SOURCE_DIR}/extern/rg_etc1_v104)
 
 ADD_DEFINITIONS(-DNVTT_EXPORTS)
-ADD_DEFINITIONS(-DHAVE_RGETC)
+#ADD_DEFINITIONS(-DHAVE_RGETC)
 #ADD_DEFINITIONS(-DHAVE_ETCPACK)
 
 IF(NVTT_SHARED)