diff --git a/core/options.vim b/core/options.vim
index 3a7e015..afd957b 100644
--- a/core/options.vim
+++ b/core/options.vim
@@ -126,6 +126,8 @@ set completeopt-=preview  " Disable the preview window
 set pumheight=10  " Maximum number of items to show in popup menu
 set pumblend=10  " pseudo transparency for completion menu
 
+set winblend=5  " pseudo transparency for floating window
+
 " Insert mode key word completion setting
 set complete+=kspell complete-=w complete-=b complete-=u complete-=t