diff --git a/cmake/external/cinn.cmake b/cmake/external/cinn.cmake
index 70b2efd4a8f277acaba40b6c1815371e9aa03072..c41e094a25e9e9ee9ddfc0a94bedf4260500071c 100644
--- a/cmake/external/cinn.cmake
+++ b/cmake/external/cinn.cmake
@@ -58,7 +58,6 @@ ExternalProject_Add(
   BUILD_COMMAND ${CINN_BUILD_COMMAND}
   INSTALL_COMMAND ""
   CMAKE_ARGS ${CINN_OPTIONAL_ARGS}
-  CMAKE_GENERATOR "Unix Makefiles"
   BUILD_BYPRODUCTS ${CINN_LIB})
 
 ExternalProject_Get_Property(external_cinn BINARY_DIR)