diff --git a/src/player.c b/src/player.c
index c2ceae5a1..50cdfbd04 100644
--- a/src/player.c
+++ b/src/player.c
@@ -834,7 +834,7 @@ static void PlayerJump(Entity* this) {
 }
 
 static void PlayerJumpInit(Entity* this) {
-    u32 temp;
+    s32 temp;
 
     this->subAction++;
 
@@ -858,8 +858,11 @@ static void PlayerJumpInit(Entity* this) {
     this->direction = Direction8FromAnimationState(AnimationStateWalk(this->animationState));
 
     temp = sub_08079FC4(1);
-    asm("lsl r0, r0, #0x4");
-    this->zVelocity = (temp - 4) * 64 * 64;
+    
+    temp <<= 4;
+    temp -= 4;
+
+    this->zVelocity = (temp << 12);
 
     this->speed = JUMP_SPEED_FWD;
     DeleteClones();