diff --git a/autoload/neosnippet/commands.vim b/autoload/neosnippet/commands.vim
index 93e9d69..297d9df 100644
--- a/autoload/neosnippet/commands.vim
+++ b/autoload/neosnippet/commands.vim
@@ -138,6 +138,7 @@ function! neosnippet#commands#_clear_markers() "{{{
 
   " Get patterns and count.
   if !&l:modifiable
+        \ || !&l:modified
         \ || empty(expand_stack)
         \ || neosnippet#variables#current_neosnippet().trigger
     return
@@ -152,6 +153,7 @@ function! neosnippet#commands#_clear_markers() "{{{
         \ expand_info.end_line,
         \ expand_info.end_patterns)
 
+  let mode = mode()
   let pos = getpos('.')
 
   " Found snippet.
@@ -170,7 +172,7 @@ function! neosnippet#commands#_clear_markers() "{{{
       let found = 1
     endif
   finally
-    if found
+    if found && mode !=# 'i'
       stopinsert
     endif