diff --git a/third_party/build_boringssl.sh b/third_party/build_boringssl.sh
index 375ed68..226363a 100755
--- a/third_party/build_boringssl.sh
+++ b/third_party/build_boringssl.sh
@@ -36,7 +36,7 @@ if [[ "x86" == "${build_os_arch}" ]]; then
 	T32="-DCMAKE_TOOLCHAIN_FILE=../util/32-bit-toolchain.cmake"
 fi
 
-cmake .. -D -DOPENSSL_NO_ASM=ON -DBUILD_SHARED_LIBS=ON -DCMAKE_CXX_FLAGS="${CXX_FLAGS}" -DCMAKE_C_FLAGS="${C_FLAGS}" -DCMAKE_BUILD_TYPE=Release ${CMAKE_OPTIONS} -DCMAKE_VERBOSE_MAKEFILE=1 ${T32}
+cmake .. -DOPENSSL_NO_ASM=ON -DBUILD_SHARED_LIBS=ON -DCMAKE_CXX_FLAGS="${CXX_FLAGS}" -DCMAKE_C_FLAGS="${C_FLAGS}" -DCMAKE_BUILD_TYPE=Release ${CMAKE_OPTIONS} -DCMAKE_VERBOSE_MAKEFILE=1 ${T32}
 check_err_exit ${library_path} "Failed to execute cmake!"
 make ${CMAKE_MAKE_OPTIONS}
 check_err_exit ${library_path} "Failed to build!"