1 files changed, 1 insertions, 1 deletions
diff --git a/include/game_state.h b/include/game_state.h
index abb2efa..aa49fc8 100644
--- a/include/game_state.h
+++ b/include/game_state.h
@@ -11,7 +11,7 @@
 class GameState
 {
 public:
-    GameState(const std::istream& mapFile){}
+    GameState(std::istream& mapFile);
 private:
     std::vector<Alien> aliens;
     std::vector<EnemyBullet> bullets;