diff --git a/platform.g3a b/platform.g3a
index fee8038..d136230 100644
Binary files a/platform.g3a and b/platform.g3a differ
diff --git a/src/collide.c b/src/collide.c
index 056a14a..6dae713 100644
--- a/src/collide.c
+++ b/src/collide.c
@@ -1,3 +1,5 @@
+#include "collide.h"
+
 #define PLAYER_SIDES 11
 #define LEVEL_WIDTH 28
 
diff --git a/src/draw.c b/src/draw.c
index 64316ae..751eafa 100644
--- a/src/draw.c
+++ b/src/draw.c
@@ -1,4 +1,5 @@
 #include <gint/display.h>
+#include "draw.h"
 
 #define PLAYER_SIDES 11
 #define BG_COLOR 0
@@ -17,11 +18,11 @@ extern image_t img_elevator1, img_elevator2, img_elevator3, img_elevator4;
 extern image_t img_elevator5, img_elevator6, img_elevator7, img_elevator8;
 extern image_t img_elevator9, img_elevator10, img_elevator11, img_elevator12;
 extern image_t img_elevator13, img_elevator14, img_elevator15, img_elevator16;
-image_t* ani_elevator[16] = {&img_elevator1, &img_elevator2, &img_elevator3,
-  &img_elevator4, &img_elevator5, &img_elevator6, &img_elevator7,
-  &img_elevator8, &img_elevator9, &img_elevator10, &img_elevator11,
-  &img_elevator12, &img_elevator13, &img_elevator14, &img_elevator15,
-  &img_elevator16};
+const image_t * ani_elevator[16] = {&img_elevator1, &img_elevator2,
+  &img_elevator3, &img_elevator4, &img_elevator5, &img_elevator6,
+  &img_elevator7, &img_elevator8, &img_elevator9, &img_elevator10,
+  &img_elevator11, &img_elevator12, &img_elevator13, &img_elevator14,
+  &img_elevator15, &img_elevator16};
 
 void draw_player(int old_x, int old_y, int x, int y)
 {
diff --git a/src/player.c b/src/player.c
index cd672ac..7825887 100644
--- a/src/player.c
+++ b/src/player.c
@@ -1,4 +1,5 @@
 #include <gint/keyboard.h>
+#include "player.h"
 
 void jump_test(char *jump_pressed, char *jump_buffer, unsigned int *jump_hold)
 {