diff --git a/cmake/generic.cmake b/cmake/generic.cmake
index c0808ac06cc78181baaa753df82f64ceb7392c16..981da16a459c173860b5a48cc605142a144185a5 100644
--- a/cmake/generic.cmake
+++ b/cmake/generic.cmake
@@ -587,7 +587,6 @@ function(grpc_library TARGET_NAME)
   get_filename_component(PROTO_WE ${grpc_library_PROTO} NAME_WE)
   get_filename_component(PROTO_PATH ${ABS_PROTO} PATH)
 
-  protobuf_generate_cpp(grpc_proto_srcs grpc_proto_hdrs "${ABS_PROTO}")
   set(grpc_grpc_srcs "${CMAKE_CURRENT_BINARY_DIR}/${PROTO_WE}.grpc.pb.cc")
   set(grpc_grpc_hdrs "${CMAKE_CURRENT_BINARY_DIR}/${PROTO_WE}.grpc.pb.h")
   cc_library("${TARGET_NAME}_proto" SRCS "${grpc_proto_srcs}")