diff --git a/src/library/Yi/Editor.hs b/src/library/Yi/Editor.hs
--- a/src/library/Yi/Editor.hs
+++ b/src/library/Yi/Editor.hs
@@ -613,7 +613,7 @@
         searchWindowSet r@(True, _, _) _ws = r
 
     case foldl searchWindowSet  (False, 0, 0) ts of
-        (False, _, _) -> fail $ "No window with key " ++ show wkey ++ "found. (focusWindowE)"
+        (False, _, _) -> fail $ "No window with key " ++ show k ++ "found. (focusWindowE)"
         (True, tabIndex, winIndex) -> do
             assign tabsA (fromJust $ PL.moveTo tabIndex ts)
             windowsA %= fromJust . PL.moveTo winIndex
diff --git a/yi.cabal b/yi.cabal
--- a/yi.cabal
+++ b/yi.cabal
@@ -1,5 +1,5 @@
 name:           yi
-version:        0.12.4
+version:        0.12.5
 category:       Development, Editor
 synopsis:       The Haskell-Scriptable Editor
 description: