diff --git a/code/game/q_math.c b/code/game/q_math.c
index bb0faf69..ecd68b24 100644
--- a/code/game/q_math.c
+++ b/code/game/q_math.c
@@ -553,14 +553,11 @@ float Q_rsqrt( float number )
 {
 	long i;
 	float x2, y;
-	const float threehalfs = 1.5F;
 
-	x2 = number * 0.5F;
-	y  = number;
-	i  = * ( long * ) &y;						// evil floating point bit level hacking
-	i  = 0x5f3759df - ( i >> 1 );               // what the fuck?
+	x2 = number * 0.5F;					
+	i  = 0x5f3759df - ( * ( long * ) &number >> 1 ); // evil floating point bit level hacking  // what the fuck? 10x
 	y  = * ( float * ) &i;
-	y  = y * ( threehalfs - ( x2 * y * y ) );   // 1st iteration
+	y  = y * ( 1.5F - ( x2 * y * y ) );   // 1st iteration
 //	y  = y * ( threehalfs - ( x2 * y * y ) );   // 2nd iteration, this can be removed
 
 #ifndef Q3_VM