diff --git a/include/math.h b/include/math.h
index 540b5f3d..419d4d50 100644
--- a/include/math.h
+++ b/include/math.h
@@ -54,6 +54,7 @@ _MATH_INLINE float cosf(float x) { return (float)cos((double)x); }
 _MATH_INLINE float atan2f(float y, float x) { return (float)atan2((double)y, (double)x); }
 _MATH_INLINE float atanf(float x) { return (float)atan((double)x); }
 _MATH_INLINE float asinf(float x) { return (float)asin((double)x); }
+_MATH_INLINE float acosf(float x) { return (float)acos((double)x); }
 
 _MATH_INLINE float fmodf(float x, float m) { return (float)fmod((double)x, (double)m); }
 
diff --git a/src/game/hsfdraw.c b/src/game/hsfdraw.c
index 7018f952..36bba085 100755
--- a/src/game/hsfdraw.c
+++ b/src/game/hsfdraw.c
@@ -2171,10 +2171,7 @@ void Hu3DDrawPost(void) {
                             PSMTXIdentity(spC0);
                         } else {
                             PSVECCrossProduct(&sp3C, &sp54, &sp48);
-                            temp_f27 = PSVECDotProduct(&sp54, &sp3C);
-                            temp_f26 = acos(temp_f27);
-                            temp_f25 = temp_f26;
-                            temp_f28 = temp_f25;
+                            temp_f28 = acosf(PSVECDotProduct(&sp54, &sp3C));
                             PSMTXRotAxisRad(spC0, &sp48, temp_f28);
                         }
                         PSMTXConcat(spC0, sp90, sp60);
@@ -2313,10 +2310,7 @@ static void ObjDraw(HsfDrawObject *arg0) {
                 PSMTXIdentity(spB0);
             } else {
                 PSVECCrossProduct(&sp2C, &sp44, &sp38);
-                temp_f28 = PSVECDotProduct(&sp44, &sp2C);
-                temp_f27 = acos(temp_f28);
-                temp_f26 = temp_f27;
-                temp_f29 = temp_f26;
+                temp_f29 = acosf(PSVECDotProduct(&sp44, &sp2C));
                 PSMTXRotAxisRad(spB0, &sp38, temp_f29);
             }
             PSMTXConcat(spB0, sp80, sp50);