diff --git a/source/games/duke/src/player_r.cpp b/source/games/duke/src/player_r.cpp
index e450255b3..2100376f9 100644
--- a/source/games/duke/src/player_r.cpp
+++ b/source/games/duke/src/player_r.cpp
@@ -1773,7 +1773,7 @@ static void onMotorcycle(int snum, ESyncBits &actions)
 	if (p->MotoSpeed >= 20 && p->on_ground == 1 && (p->vehTurnLeft || p->vehTurnRight))
 	{
 		velAdjustment = p->vehTurnLeft ? -10 : 10;
-		auto angAdjustment = buildang(velAdjustment < 0 ? 350 : -350);
+		auto angAdjustment = (velAdjustment < 0 ? 350 : -350) << BAMBITS;
 
 		if (p->moto_on_mud || p->moto_on_oil || !p->NotOnWater)
 		{
@@ -1811,7 +1811,7 @@ static void onMotorcycle(int snum, ESyncBits &actions)
 
 		p->posxv += currSpeed * bcos(velAdjustment * -51 + p->angle.ang.asbuild(), 4);
 		p->posyv += currSpeed * bsin(velAdjustment * -51 + p->angle.ang.asbuild(), 4);
-		p->angle.addadjustment(getincanglebam(p->angle.ang, p->angle.ang - angAdjustment));
+		p->angle.addadjustment(getincanglebam(p->angle.ang, p->angle.ang - bamang(angAdjustment)));
 	}
 	else if (p->MotoSpeed >= 20 && p->on_ground == 1 && (p->moto_on_mud || p->moto_on_oil))
 	{
@@ -2040,7 +2040,7 @@ static void onBoat(int snum, ESyncBits &actions)
 	{
 		int currSpeed = p->MotoSpeed * 4.;
 		short velAdjustment = p->vehTurnLeft ? -10 : 10;
-		auto angAdjustment = buildang(velAdjustment < 0 ? 350 : -350);
+		auto angAdjustment = (velAdjustment < 0 ? 350 : -350) << BAMBITS;
 
 		if (p->moto_do_bump)
 		{
@@ -2055,7 +2055,7 @@ static void onBoat(int snum, ESyncBits &actions)
 
 		p->posxv += currSpeed * bcos(velAdjustment * -51 + p->angle.ang.asbuild(), 4);
 		p->posyv += currSpeed * bsin(velAdjustment * -51 + p->angle.ang.asbuild(), 4);
-		p->angle.addadjustment(getincanglebam(p->angle.ang, p->angle.ang - angAdjustment));
+		p->angle.addadjustment(getincanglebam(p->angle.ang, p->angle.ang - bamang(angAdjustment)));
 	}
 	if (p->NotOnWater && p->MotoSpeed > 50)
 		p->MotoSpeed -= (p->MotoSpeed / 2.);