diff --git a/ADIS_Sumo/Sumo/Maze.c b/ADIS_Sumo/Sumo/Maze.c
index 740a827..b497075 100644
--- a/ADIS_Sumo/Sumo/Maze.c
+++ b/ADIS_Sumo/Sumo/Maze.c
@@ -53,11 +53,11 @@ static bool isSolved = FALSE;
 static bool useLeftHandOnTheWallRule = TRUE;
 static uint8_t presentCounter = 0;
 
-uint8_t MAZE_ResetPresentCount(){
+void MAZE_ResetPresentCount(void){
 	presentCounter = 0;
 }
 
-uint8_t MAZE_GetPresentCount(){
+uint8_t MAZE_GetPresentCount(void){
 	return presentCounter;
 }
 
diff --git a/ADIS_Sumo/Sumo/Maze.h b/ADIS_Sumo/Sumo/Maze.h
index bc7c9ad..c0c2d00 100644
--- a/ADIS_Sumo/Sumo/Maze.h
+++ b/ADIS_Sumo/Sumo/Maze.h
@@ -11,9 +11,10 @@
 #if PL_CONFIG_APP_LINE_MAZE
 #include "Turn.h"
 
-uint8_t MAZE_ResetPresentCount();
+void MAZE_ResetPresentCount(void);
+
+uint8_t MAZE_GetPresentCount(void);
 
-uint8_t MAZE_GetPresentCount();
 /*!
  * \brief Adds a new path while going forward through the maze
  * \param kind New path to be added