diff --git a/lambdacube-examples.cabal b/lambdacube-examples.cabal
--- a/lambdacube-examples.cabal
+++ b/lambdacube-examples.cabal
@@ -1,5 +1,5 @@
 Name:          lambdacube-examples
-Version:       0.1.2
+Version:       0.2.1
 Cabal-Version: >= 1.2
 Synopsis:      Examples for LambdaCube
 Category:      Graphics
@@ -55,12 +55,12 @@
   main-is:     lambdacube-basic
   HS-Source-Dirs: src
   Main-IS:        lambdacube-basic.hs
-  Build-Depends:  base >= 4 && < 5, mtl, lambdacube-engine, elerea, GLFW-b, hslogger
+  Build-Depends:  base >= 4 && < 5, mtl, lambdacube-engine, elerea, GLFW-b
   GHC-Options:    -Wall -O2 -fno-warn-unused-do-bind -fno-warn-name-shadowing
 
 Executable lambdacube-cameratrack
   main-is:     lambdacube-cameratrack
   HS-Source-Dirs: src
   Main-IS:        lambdacube-cameratrack.hs
-  Build-Depends:  base >= 4 && < 5, lambdacube-engine, elerea, GLFW-b, hslogger
+  Build-Depends:  base >= 4 && < 5, lambdacube-engine, elerea, GLFW-b
   GHC-Options:    -Wall -O2 -fno-warn-unused-do-bind -fno-warn-name-shadowing
diff --git a/src/Utils.hs b/src/Utils.hs
--- a/src/Utils.hs
+++ b/src/Utils.hs
@@ -6,7 +6,6 @@
 
 import FRP.Elerea.Param
 import Graphics.UI.GLFW as GLFW
-import System.Log.Logger
 
 import Graphics.LambdaCube as LC
 
@@ -28,7 +27,6 @@
 
 initCommon :: String -> IO (Signal (Int, Int))
 initCommon title = do
-    updateGlobalLogger rootLoggerName (setLevel DEBUG)
     initialize
     openWindow defaultDisplayOptions
         { displayOptions_numRedBits     = 8