diff --git a/Message/Response/ResponseManager.js b/Message/Response/ResponseManager.js
index f8b1464..e1efa18 100644
--- a/Message/Response/ResponseManager.js
+++ b/Message/Response/ResponseManager.js
@@ -68,7 +68,7 @@
         } else if (typeof this.messages[key] !== 'undefined') {
             this.messages[key].any(data);
         } else {
-            console.log('does not exist');
+            jsOMS.Log.Logger.instance.warning('Undefined type: ' + key);
         }
     };
 }(window.jsOMS = window.jsOMS || {}));
diff --git a/UI/ActionManager.js b/UI/ActionManager.js
index 2fe7c3d..cda5a4e 100644
--- a/UI/ActionManager.js
+++ b/UI/ActionManager.js
@@ -154,7 +154,7 @@
         console.log(action.type);
 
         if (!this.actions.hasOwnProperty(action.type)) {
-            console.log('Undefined action ' + action.type);
+            jsOMS.Log.Logger.instance.warning('Undefined action ' + action.type);
             return;
         }
 
diff --git a/UI/Component/Form.js b/UI/Component/Form.js
index e8c82c1..9bd0c29 100644
--- a/UI/Component/Form.js
+++ b/UI/Component/Form.js
@@ -221,7 +221,7 @@
                     }
                 }
             } catch (e) {
-                self.app.logger.error('Invalid form response. \n' +
+                jsOMS.Log.Logger.instance.error('Invalid form response. \n' +
                     'URL: ' + form.getAction() + '\n' +
                     'Request: ' + JSON.stringify(form.getData()) + '\n' +
                     'Response: ' + xhr.response
diff --git a/UI/Component/Input.js b/UI/Component/Input.js
index 50c8d63..98d7b29 100644
--- a/UI/Component/Input.js
+++ b/UI/Component/Input.js
@@ -132,7 +132,7 @@
                     }
                 }
             } catch (exception) {
-                self.app.logger.error('Invalid JSON object: ' + xhr, 'FormManager');
+                jsOMS.Log.Logger.instance.error('Invalid JSON object: ' + xhr, 'FormManager');
                 return false;
             }
         });
diff --git a/UI/Input/Voice/VoiceManager.js b/UI/Input/Voice/VoiceManager.js
index 305cb2d..04dda30 100644
--- a/UI/Input/Voice/VoiceManager.js
+++ b/UI/Input/Voice/VoiceManager.js
@@ -80,11 +80,11 @@
         }
 
         this.recognition.onnomatch = function(event) {
-            console.log('Couldn\'t recognize speech');
+            jsOMS.Log.Logger.instance.warning('Couldn\'t recognize speech');
         }
 
         this.recognition.onerror = function(event) {
-            console.log('Error during speech recognition: ' + event.error);
+            jsOMS.Log.Logger.instance.warning('Error during speech recognition: ' + event.error);
         }
     };
 
diff --git a/UnhandledException.js b/UnhandledException.js
index 4cc567c..7efdfee 100644
--- a/UnhandledException.js
+++ b/UnhandledException.js
@@ -13,7 +13,7 @@
     "use strict";
     window.addEventListener('error', function (e)
     {
-        console.log(e.error);
+        jsOMS.Log.Logger.instance.error(e.error);
         
         return false;
     });
diff --git a/Views/FormView.js b/Views/FormView.js
index c2bf57a..4a9c473 100644
--- a/Views/FormView.js
+++ b/Views/FormView.js
@@ -207,7 +207,7 @@
                 }
             }
         } catch (e) {
-            console.log(e);
+            jsOMS.Log.Logger.instance.error(e);
         }
 
         return true;