diff --git a/after/ftplugin/tex.vim b/after/ftplugin/tex.vim
index 7de12d3..87281a6 100644
--- a/after/ftplugin/tex.vim
+++ b/after/ftplugin/tex.vim
@@ -1,5 +1,5 @@
 " Only use the following character pairs for tex file
-if &runtimepath =~? 'auto-pairs'
+if match(&runtimepath, 'auto-pairs') != -1
   let b:AutoPairs = AutoPairsDefine({'<' : '>'})
   let b:AutoPairs = {'(':')', '[':']', '{':'}', '<':'>'}
 endif
diff --git a/after/ftplugin/vim.vim b/after/ftplugin/vim.vim
index 4f92851..dcbb8e1 100644
--- a/after/ftplugin/vim.vim
+++ b/after/ftplugin/vim.vim
@@ -21,7 +21,7 @@ set shiftwidth=2    " number of spaces to use for autoindent
 set expandtab       " expand tab to spaces so that tabs are spaces
 
 " Only define following variable if Auto-pairs plugin is used
-if &runtimepath =~? 'auto-pairs'
+if match(&runtimepath, 'auto-pairs') != -1
   let b:AutoPairs = AutoPairsDefine({'<' : '>'})
 
   " Do not use `"` for vim script since `"` is also used for comment