1 files changed, 1 insertions, 1 deletions
diff --git a/src/game.cpp b/src/game.cpp
index 17000a0..47526c8 100644
--- a/src/game.cpp
+++ b/src/game.cpp
@@ -101,7 +101,7 @@ void GameState::render(){
 }
 
 bool GameState::cellIsEmpty(Point* p){
-    return( grid[p->y][p->x] == 0 );
+    return( p->x < GRID_WIDTH && p->x >= 0 && grid[p->y][p->x] == 0 );
 }
 
 void GameState::pressRotate(){}