diff --git a/vector.lua b/vector.lua
index 6e25bd6..2d75d62 100644
--- a/vector.lua
+++ b/vector.lua
@@ -46,10 +46,8 @@ local function randomDirection(len_min, len_max)
 
 	assert(len_max > 0, "len_max must be greater than zero")
 	assert(len_max >= len_min, "len_max must be greater than or equal to len_min")
-
-	local range = len_max - len_min
-	local rnd = math.random() * range
-	return fromPolar(math.random()*2*math.pi,
+	
+	return fromPolar(math.random() * 2*math.pi,
 	                 math.random() * (len_max-len_min) + len_min)
 end