--- a/src/main.c	2020-09-18 22:43:49.545959883 -0000
+++ b/src/main.c	2020-09-18 22:43:40.465778941 -0000
@@ -55,7 +55,7 @@ struct enemystruct enemy [NO_ENEMIES];
 struct ebulletstruct ebullet [NO_EBULLETS];
 struct pbulletstruct pbullet [NO_PBULLETS];
 struct arenastruct arena;
-struct eclassstruct eclass [NO_ENEMY_TYPES];
+extern struct eclassstruct eclass [NO_ENEMY_TYPES];
 struct cloudstruct cloud [NO_CLOUDS];
 struct bossstruct boss;