diff --git a/apps/twnlua/game.c b/apps/twnlua/game.c
index 9dbf13e..f84f585 100644
--- a/apps/twnlua/game.c
+++ b/apps/twnlua/game.c
@@ -87,7 +87,7 @@ static void *custom_alloc(void *ud, void *ptr, size_t osize, size_t nsize) {
 void game_tick(void) {
     if (ctx.initialization_needed) {
         if (!ctx.udata)
-            ctx.udata = ccalloc(1, sizeof (State));
+            ctx.udata = calloc(1, sizeof (State));
 
         State *state = ctx.udata;
 
diff --git a/src/twn_timer.c b/src/twn_timer.c
index ac3716e..6840222 100644
--- a/src/twn_timer.c
+++ b/src/twn_timer.c
@@ -33,7 +33,7 @@ bool start_sanity_timer(uint32_t milliseconds_to_expire) {
 }
 
 
-bool end_sanity_timer(void) {
+void end_sanity_timer(void) {
     SDL_RemoveTimer(sanity_timer);
     sanity_timer = 0;
 }
diff --git a/src/twn_timer_c.h b/src/twn_timer_c.h
index b0e96f7..bdbfde7 100644
--- a/src/twn_timer_c.h
+++ b/src/twn_timer_c.h
@@ -5,6 +5,6 @@
 #include <stdint.h>
 
 bool start_sanity_timer(uint32_t milliseconds_to_expire);
-bool end_sanity_timer(void);
+void end_sanity_timer(void);
 
 #endif // TWN_TIMER_H