--- a/cmake/External/nnpack.cmake
+++ b/cmake/External/nnpack.cmake
@@ -56,7 +56,7 @@
   set(PTHREADPOOL_SOURCE_DIR "${CAFFE2_THIRD_PARTY_ROOT}/pthreadpool" CACHE STRING "pthreadpool source directory")
   set(GOOGLETEST_SOURCE_DIR "${CAFFE2_THIRD_PARTY_ROOT}/googletest" CACHE STRING "Google Test source directory")
 
-  if(NOT TARGET nnpack)
+  if(FALSE)
     set(NNPACK_BUILD_TESTS OFF CACHE BOOL "")
     set(NNPACK_BUILD_BENCHMARKS OFF CACHE BOOL "")
     set(NNPACK_LIBRARY_TYPE "static" CACHE STRING "")