diff --git a/headers/pixelManager.h b/headers/pixelManager.h
index 7310bb8..f51fcf3 100644
--- a/headers/pixelManager.h
+++ b/headers/pixelManager.h
@@ -1,5 +1,5 @@
-#ifndef GUARD_DRAWENGINE
-#define GUARD_DRAWENGINE
+#ifndef GUARD_PIXELMANAGER_H
+#define GUARD_PIXELMANAGER_H
 
 #include "mingl/mingl.h"
 #include "mingl/shape/line.h"
@@ -11,6 +11,9 @@
 class PixelManager{
 public:
 	MinGL& window;
+
+	nsGui::Sprite background = nsGui::Sprite("./assets/bg.sl2"); // you cant create an empty sprite for some reasons
+
 	explicit PixelManager(MinGL&);
 	void drawInvader1(const nsGraphics::Vec2D& baseVector, unsigned size);
 	void drawInvader2(const nsGraphics::Vec2D& baseVector, unsigned size);
@@ -18,7 +21,6 @@ public:
 	void drawPlayer(const nsGraphics::Vec2D& baseVector, unsigned width, const nsGraphics::RGBAcolor &color);
 	void drawTorpedo(const nsGraphics::Vec2D& baseVector, unsigned width, const nsGraphics::RGBAcolor& color);
 	void drawMissile(const nsGraphics::Vec2D& baseVector, unsigned width, const nsGraphics::RGBAcolor& color);
-	nsGui::Sprite background = nsGui::Sprite("./assets/bg.sl2", nsGraphics::Vec2D(0,0)); // you cant create an empty sprite for some reasons
 	void drawBackground();
 
 	unsigned showInitialMenu();
diff --git a/src/gameManagers.cpp b/src/gameManagers.cpp
index 8590a01..31fe5cd 100644
--- a/src/gameManagers.cpp
+++ b/src/gameManagers.cpp
@@ -147,7 +147,7 @@ bool Game::checkMissilesAndPlayers() {
 	auto miss_ite = missiles.begin();
 	while(miss_ite!=missiles.end()){
 		bool wasColliding = false;
-		if(miss_ite->getY()<=PLAYER_HEIGHT){ // check collision on Y
+		if(miss_ite->getY()>=pm.getScreenHeight()-PLAYER_HEIGHT){ // check collision on Y
 			// now check collision on X (with both players)
 			for(Player& p : players){
 				if(areLinesColliding(