diff --git a/autoload/SpaceVim/plugins/projectmanager.vim b/autoload/SpaceVim/plugins/projectmanager.vim
index 1c0da2e88..f6b0adbc8 100644
--- a/autoload/SpaceVim/plugins/projectmanager.vim
+++ b/autoload/SpaceVim/plugins/projectmanager.vim
@@ -61,6 +61,7 @@ else
   " the name projectmanager is too long
   " use rooter instead
   let s:LOGGER =SpaceVim#logger#derive('rooter')
+  call s:LOGGER.start_debug()
   let s:TIME = SpaceVim#api#import('time')
   let s:JSON = SpaceVim#api#import('data#json')
   let s:LIST = SpaceVim#api#import('data#list')
diff --git a/lua/spacevim/plugin/projectmanager.lua b/lua/spacevim/plugin/projectmanager.lua
index b72bf34fc..a9e2e83ae 100644
--- a/lua/spacevim/plugin/projectmanager.lua
+++ b/lua/spacevim/plugin/projectmanager.lua
@@ -7,6 +7,11 @@
 --=============================================================================
 
 local logger = require('spacevim.logger').derive('project')
+
+
+-- start debug mode
+logger.start_debug()
+
 local sp = require('spacevim')
 local sp_file = require('spacevim.api.file')
 local sp_json = require('spacevim.api.data.json')