diff --git a/code/game/ai_main.c b/code/game/ai_main.c
index 2dacd877..c6958318 100644
--- a/code/game/ai_main.c
+++ b/code/game/ai_main.c
@@ -781,7 +781,7 @@ void BotChangeViewAngles(bot_state_t *bs, float thinktime) {
 		//
 		if (bot_challenge.integer) {
 			//smooth slowdown view model
-			diff = abs(AngleDifference(bs->viewangles[i], bs->ideal_viewangles[i]));
+			diff = fabs(AngleDifference(bs->viewangles[i], bs->ideal_viewangles[i]));
 			anglespeed = diff * factor;
 			if (anglespeed > maxchange) anglespeed = maxchange;
 			bs->viewangles[i] = BotChangeViewAngle(bs->viewangles[i],
@@ -878,7 +878,7 @@ void BotInputToUserCommand(bot_input_t *bi, usercmd_t *ucmd, int delta_angles[3]
 	//set the view independent movement
 	f = DotProduct(forward, bi->dir);
 	r = DotProduct(right, bi->dir);
-	u = abs(forward[2]) * bi->dir[2];
+	u = fabs(forward[2]) * bi->dir[2];
 	m = fabs(f);
 
 	if (fabs(r) > m) {