diff --git a/autoload/airline/themes/default.vim b/autoload/airline/themes/default.vim
index aaf4c411..56e78de2 100644
--- a/autoload/airline/themes/default.vim
+++ b/autoload/airline/themes/default.vim
@@ -1,35 +1,35 @@
 let g:airline#themes#default#normal = {
       \ 'mode':           [ '#00005f' , '#dfff00' , 17  , 190 , 'bold' ] ,
-      \ 'mode_seperator': [ '#dfff00' , '#444444' , 190 , 238 , 'bold' ] ,
+      \ 'mode_separator': [ '#dfff00' , '#444444' , 190 , 238 , 'bold' ] ,
       \ 'info':           [ '#ffffff' , '#444444' , 255 , 238 , ''     ] ,
-      \ 'info_seperator': [ '#444444' , '#202020' , 238 , 234 , 'bold' ] ,
+      \ 'info_separator': [ '#444444' , '#202020' , 238 , 234 , 'bold' ] ,
       \ 'statusline':     [ '#9cffd3' , '#202020' , 85  , 234 , ''     ] ,
       \ 'statusline_nc':  [ '#000000' , '#202020' , 232 , 234 , ''     ] ,
       \ 'file':           [ '#ff0000' , '#1c1c1c' , 160 , 233 , ''     ] ,
       \ 'inactive':       [ '#4e4e4e' , '#1c1c1c' , 239 , 234 , ''     ] ,
       \ }
 let g:airline#themes#default#normal_modified = copy(g:airline#themes#default#normal)
-let g:airline#themes#default#normal_modified.info_seperator = [ '#ffffff' , '#5f005f' , 255 , 53 , '' ]
+let g:airline#themes#default#normal_modified.info_separator = [ '#ffffff' , '#5f005f' , 255 , 53 , '' ]
 let g:airline#themes#default#normal_modified.statusline     = [ '#ffffff' , '#5f005f' , 255 , 53 , '' ]
 
 let g:airline#themes#default#insert = {
       \ 'mode':           [ '#00005f' , '#00dfff' , 17  , 45  , 'bold' ] ,
-      \ 'mode_seperator': [ '#00dfff' , '#005fff' , 45  , 27  , 'bold' ] ,
+      \ 'mode_separator': [ '#00dfff' , '#005fff' , 45  , 27  , 'bold' ] ,
       \ 'info':           [ '#ffffff' , '#005fff' , 255 , 27  , ''     ] ,
-      \ 'info_seperator': [ '#005fff' , '#000087' , 27  , 18  , 'bold' ] ,
+      \ 'info_separator': [ '#005fff' , '#000087' , 27  , 18  , 'bold' ] ,
       \ 'statusline':     [ '#ffffff' , '#000080' , 15  , 17  , ''     ] ,
       \ }
 let g:airline#themes#default#insert_modified = copy(g:airline#themes#default#insert)
-let g:airline#themes#default#insert_modified.info_seperator = [ '#ffffff' , '#5f005f' , 255 , 53 , '' ]
+let g:airline#themes#default#insert_modified.info_separator = [ '#ffffff' , '#5f005f' , 255 , 53 , '' ]
 let g:airline#themes#default#insert_modified.statusline     = [ '#ffffff' , '#5f005f' , 255 , 53 , '' ]
 
 let g:airline#themes#default#visual = {
       \ 'mode':           [ '#000000' , '#ffaf00' , 232 , 214 , 'bold' ] ,
-      \ 'mode_seperator': [ '#ffaf00' , '#ff5f00' , 214 , 202 , 'bold' ] ,
+      \ 'mode_separator': [ '#ffaf00' , '#ff5f00' , 214 , 202 , 'bold' ] ,
       \ 'info':           [ '#000000' , '#ff5f00' , 232 , 202 , ''     ] ,
-      \ 'info_seperator': [ '#ff5f00' , '#5f0000' , 202 , 52  , 'bold' ] ,
+      \ 'info_separator': [ '#ff5f00' , '#5f0000' , 202 , 52  , 'bold' ] ,
       \ 'statusline':     [ '#ffffff' , '#5f0000' , 15  , 52  , ''     ] ,
       \ }
 let g:airline#themes#default#visual_modified = copy(g:airline#themes#default#visual)
-let g:airline#themes#default#visual_modified.info_seperator = [ '#ffffff' , '#5f005f' , 255 , 53 , '' ]
+let g:airline#themes#default#visual_modified.info_separator = [ '#ffffff' , '#5f005f' , 255 , 53 , '' ]
 let g:airline#themes#default#visual_modified.statusline     = [ '#ffffff' , '#5f005f' , 255 , 53 , '' ]
diff --git a/doc/airline.txt b/doc/airline.txt
index 70c5fcc0..a66eb329 100644
--- a/doc/airline.txt
+++ b/doc/airline.txt
@@ -30,12 +30,12 @@ CONFIGURATION                                        *airline-configuration*
 there are a couple configuration values available (shown with their default
 values):
 
-* the seperator used on the left side
+* the separator used on the left side
 >
   let g:airline_left_sep='>'
 <
 
-* the seperator used on the right side
+* the separator used on the right side
 >
   let g:airline_left_right='<'
 <
@@ -68,7 +68,7 @@ values):
 ==============================================================================
 CUSTOMIZATION                                        *airline-customization*
 
-here are some unicode symbols for customizing the left/right seperators, as
+here are some unicode symbols for customizing the left/right separators, as
 well as the powerline font glyths
 
 >
diff --git a/plugin/airline.vim b/plugin/airline.vim
index 8a3af6a0..bc11ef96 100644
--- a/plugin/airline.vim
+++ b/plugin/airline.vim
@@ -44,9 +44,9 @@ let s:airline_mode_map = {
       \ }
 let s:airline_highlight_map = {
       \ 'mode'           : 'User2',
-      \ 'mode_seperator' : 'User3',
+      \ 'mode_separator' : 'User3',
       \ 'info'           : 'User4',
-      \ 'info_seperator' : 'User5',
+      \ 'info_separator' : 'User5',
       \ 'statusline'     : 'StatusLine',
       \ 'statusline_nc'  : 'StatusLineNC',
       \ 'file'           : 'User6',
@@ -111,12 +111,12 @@ endfunction
 function! AirlineModePrefix()
   let l:mode = mode()
 
-  call <sid>highlight('normal', ['statusline','statusline_nc','inactive','mode','mode_seperator','info','info_seperator','file'])
+  call <sid>highlight('normal', ['statusline','statusline_nc','inactive','mode','mode_separator','info','info_separator','file'])
 
   if l:mode ==# "i" || l:mode ==# "R"
-    call <sid>highlight('insert', ['statusline','mode','mode_seperator','info','info_seperator'])
+    call <sid>highlight('insert', ['statusline','mode','mode_separator','info','info_separator'])
   elseif l:mode ==? "v" || l:mode ==# ""
-    call <sid>highlight('visual', ['statusline','mode','mode_seperator','info','info_seperator'])
+    call <sid>highlight('visual', ['statusline','mode','mode_separator','info','info_separator'])
   endif
 
   if has_key(s:airline_mode_map, l:mode)