diff --git a/src/data.c b/src/data.c
index 66d575e66a..f5035262c5 100644
--- a/src/data.c
+++ b/src/data.c
@@ -3,6 +3,7 @@
 #include "battle.h"
 #include "data.h"
 #include "graphics.h"
+#include "trainer_pools.h"
 #include "battle_transition.h"
 #include "constants/abilities.h"
 #include "constants/items.h"