diff --git a/src/app/Dictionary.h b/src/app/Dictionary.h
index 63566ef..5ed1f9b 100644
--- a/src/app/Dictionary.h
+++ b/src/app/Dictionary.h
@@ -229,7 +229,7 @@ public:
         return NULL;
     }
 
-    unsigned int count()
+    unsigned int count() const
     {
         unsigned int counter(0);
         if(isListEmpty(_head->_next))return counter;
@@ -321,7 +321,7 @@ protected:
 
         return true;
     }
-    boolean isListEmpty(Dictionary *node) {return node == NULL;}
+    boolean isListEmpty(Dictionary *node) const {return node == NULL;}
 
     char *_parameter;
     T *_value;
diff --git a/src/app/TaskSchedulerManager.cpp b/src/app/TaskSchedulerManager.cpp
index aadc1d7..d7fb827 100644
--- a/src/app/TaskSchedulerManager.cpp
+++ b/src/app/TaskSchedulerManager.cpp
@@ -239,7 +239,7 @@ void TaskSchedulerManager::run()
   }
 }
 
-unsigned int TaskSchedulerManager::taskCount()
+unsigned int TaskSchedulerManager::taskCount() const
 {
   return _taskDataDictio.count();
 }
diff --git a/src/app/TaskSchedulerManager.h b/src/app/TaskSchedulerManager.h
index 0cba4e5..f5b2e4e 100644
--- a/src/app/TaskSchedulerManager.h
+++ b/src/app/TaskSchedulerManager.h
@@ -26,7 +26,7 @@ namespace TaskSchedulerManagerHelper
       static Schedule *scheduleBuilder();
       Schedule *setMillis(uint32_t millis);
       Schedule *setSeconds(uint32_t seconds);
-	  Schedule *setMinutes(uint32_t minutes);
+      Schedule *setMinutes(uint32_t minutes);
       Schedule *setHours(uint16_t hours);
       Schedule *setDateTime(DateTime &dateTime);
       Schedule *setDays(uint8_t days);
@@ -75,7 +75,7 @@ class TaskSchedulerManager
 	TaskSchedulerManagerHelper::Schedule *getTask(const char *name);
     TaskSchedulerManagerHelper::Schedule *getTask(uint16_t id);
     void run();
-    unsigned int taskCount();
+    unsigned int taskCount() const;
     uint16_t findFreeTaskId();
   protected:
     TaskSchedulerManager();