diff --git a/apps/scenery/scenes/ingame.c b/apps/scenery/scenes/ingame.c
index d7848a6..ece900c 100644
--- a/apps/scenery/scenes/ingame.c
+++ b/apps/scenery/scenes/ingame.c
@@ -3,6 +3,7 @@
 #include "scene.h"
 
 #include "twn_game_api.h"
+#include "twn_vec.h"
 
 #define STB_PERLIN_IMPLEMENTATION
 #include <stb_perlin.h>
diff --git a/include/twn_util.h b/include/twn_util.h
index 3ae6ef2..d47c2bc 100644
--- a/include/twn_util.h
+++ b/include/twn_util.h
@@ -7,6 +7,7 @@
 
 #include <stdint.h>
 #include <stdbool.h>
+#include <math.h>
 
 
 /* DON'T FORGET ABOUT DOUBLE EVALUATION */
diff --git a/src/twn_camera.c b/src/twn_camera.c
index 4153772..f1c2785 100644
--- a/src/twn_camera.c
+++ b/src/twn_camera.c
@@ -1,5 +1,6 @@
 #include "twn_camera.h"
 #include "twn_config.h"
+#include "twn_vec.h"
 #include "twn_engine_context_c.h"
 
 #include <math.h>