diff --git a/data/sound.wav b/data/sound.wav
index 7475499..9d241ff 100644
Binary files a/data/sound.wav and b/data/sound.wav differ
diff --git a/main.cpp b/main.cpp
index a83cedd..f1d4e55 100644
--- a/main.cpp
+++ b/main.cpp
@@ -123,12 +123,34 @@ int main(int argc, char *argv[])
 			// Actualiza el sprite
 			if (sprite->getPosX() + sprite->getWidth() > options->gameWidth or sprite->getPosX() < 0)
 			{
-				sprite->setVelX(sprite->getVelX() * -1);
+				sprite->undoMoveX();
+				int spr_direction = 1;
+				int spr_force = 1;
+				if (sprite->getVelX() > 0)
+				{
+					spr_direction = -1;
+				}
+				if (SDL_GetTicks() % 2 == 0)
+				{
+					spr_force = 2;
+				}
+				sprite->setVelX(spr_force * spr_direction);
 				JA_PlaySound(sound);
 			}
 			if (sprite->getPosY() + sprite->getHeight() > options->gameHeight or sprite->getPosY() < 0)
 			{
-				sprite->setVelY(sprite->getVelY() * -1);
+				sprite->undoMoveY();
+				int spr_direction = 1;
+				int spr_force = 1;
+				if (sprite->getVelY() > 0)
+				{
+					spr_direction = -1;
+				}
+				if (SDL_GetTicks() % 2 == 0)
+				{
+					spr_force = 2;
+				}
+				sprite->setVelY(spr_force * spr_direction);
 				JA_PlaySound(sound);
 			}
 			sprite->update();