diff --git a/CMakeLists.txt b/CMakeLists.txt
index 05bc5ac3..2723e1e1 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -568,12 +568,17 @@ if(NOT USE_BUNDLED_GRPC)
 	else()
 		message(FATAL_ERROR "Couldn't find system grpc")
 	endif()
+	find_program(GRPC_CPP_PLUGIN grpc_cpp_plugin)
+	if(NOT GRPC_CPP_PLUGIN)
+		message(FATAL_ERROR "System grpc_cpp_plugin not found")
+	endif()
 else()
 	set(GRPC_SRC "${PROJECT_BINARY_DIR}/grpc-prefix/src/grpc")
 	message(STATUS "Using bundled grpc in '${GRPC_SRC}'")
 	set(GRPC_INCLUDE "${GRPC_SRC}/include")
 	set(GRPC_LIB "${GRPC_SRC}/libs/opt/libgrpc_unsecure.a")
 	set(GRPCPP_LIB "${GRPC_SRC}/libs/opt/libgrpc++_unsecure.a")
+	set(GRPC_CPP_PLUGIN "${GRPC_SRC}/bins/opt/grpc_cpp_plugin")
 
 	get_filename_component(PROTOC_DIR ${PROTOC} DIRECTORY)