diff --git a/autoload/search_pulse.vim b/autoload/search_pulse.vim
index cb9839b..8fd9aca 100644
--- a/autoload/search_pulse.vim
+++ b/autoload/search_pulse.vim
@@ -20,7 +20,12 @@ func! s:ScrubPattern(s)
 endf
 
 func! s:Initialize()
-  let gui_running = has('gui_running')
+  let gui_running = 0
+  if has('gui_running')
+    let gui_running = 1
+  elseif has('termguicolors')
+    let gui_running = &termguicolors == 1
+  endif
 
   " Color list:
   " http://vim.wikia.com/wiki/Xterm256_color_names_for_console_Vim