diff --git a/.gitignore b/.gitignore
index 0fd9bb7..c0b3827 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
 obj/
 game
+*.core
diff --git a/include/player.h b/include/player.h
index 33bc140..e920a90 100644
--- a/include/player.h
+++ b/include/player.h
@@ -4,12 +4,7 @@
 #include <stdbool.h>
 #include "food.h"
 
-#define UP    0
-#define RIGHT 1
-#define DOWN  2
-#define LEFT  3
-
-typedef int Direction;
+typedef enum { UP, RIGHT, DOWN, LEFT} Direction;
 typedef struct player_node_t PlayerNode;
 typedef struct player_t Player;
 
diff --git a/src/player.c b/src/player.c
index 3cab937..57d51b7 100644
--- a/src/player.c
+++ b/src/player.c
@@ -45,6 +45,7 @@ bool playerDoTick(Player *player, Food food)
 {
     bool food_collision;
     PlayerNode *new_head = (PlayerNode *)malloc(sizeof(PlayerNode));
+    new_head->next = NULL;
     int head_x = player->head->x;
     int head_y = player->head->y;