diff --git a/src/Yi/Keymap/Emacs.hs b/src/Yi/Keymap/Emacs.hs
--- a/src/Yi/Keymap/Emacs.hs
+++ b/src/Yi/Keymap/Emacs.hs
@@ -253,8 +253,7 @@
   ctrlC = choice [ ctrlCh 'c' ?>>! commentRegion ]
 
 
-  rectangleFunctions = choice [ char 'a' ?>>! alignRegionOn
-                              , char 'o' ?>>! openRectangle
+  rectangleFunctions = choice [ char 'o' ?>>! openRectangle
                               , char 't' ?>>! stringRectangle
                               , char 'k' ?>>! killRectangle
                               , char 'y' ?>>! yankRectangle
diff --git a/yi-keymap-emacs.cabal b/yi-keymap-emacs.cabal
--- a/yi-keymap-emacs.cabal
+++ b/yi-keymap-emacs.cabal
@@ -3,7 +3,7 @@
 -- see: https://github.com/sol/hpack
 
 name:           yi-keymap-emacs
-version:        0.15.0
+version:        0.16.0
 synopsis:       Emacs keymap for Yi editor
 category:       Yi
 homepage:       https://github.com/yi-editor/yi#readme