diff --git a/docs/src/process.rst b/docs/src/process.rst
index a535e8f1..4ec83768 100644
--- a/docs/src/process.rst
+++ b/docs/src/process.rst
@@ -103,7 +103,7 @@ Data types
              * specified in the 'num_gids' field.  This does not work on windows;
              * setting this flag will cause uv_spawn() to fail.
              */
-            UV_PROCESS_SETGROUPS = (1 << 8)
+            UV_PROCESS_SETGROUPS = (1 << 9)
         };
 
 .. c:type:: uv_stdio_container_t
@@ -230,8 +230,8 @@ Public members
 
 .. c:member:: uv_uid_t uv_process_options_t.uid
 .. c:member:: uv_gid_t uv_process_options_t.gid
-.. c:member:: uv_process_options_t.gids
-.. c:member:: uv_process_options_t.gids_size
+.. c:member:: uv_gid_t* uv_process_options_t.gids
+.. c:member:: size_t uv_process_options_t.gids_size
 
     Libuv can change the child process' user/group id and supplementary group
     ids. This happens only when the appropriate bits are set in the flags fields.
diff --git a/src/unix/process.c b/src/unix/process.c
index 26fdd5b5..dd569bb3 100644
--- a/src/unix/process.c
+++ b/src/unix/process.c
@@ -397,8 +397,7 @@ static void uv__process_child_init(const uv_process_options_t* options,
 
   if (options->flags & UV_PROCESS_SETGROUPS) {
     if (setgroups(options->gids_size, options->gids)) {
-      uv__write_int(error_fd, -errno);
-      _exit(127);
+      uv__write_errno(error_fd);
     }
   }