diff --git a/Sources/Common/BitWriter.swift b/Sources/Common/BitWriter.swift
index dfea59e0..0e21d037 100644
--- a/Sources/Common/BitWriter.swift
+++ b/Sources/Common/BitWriter.swift
@@ -75,12 +75,11 @@ class BitWriter {
         }
     }
 
-    func write(number: Int, bitsCount: Int, bitOrder: BitReader.BitOrder? = nil) {
-        let bitOrderToUse = (bitOrder ?? self.bitOrder)
-        var mask = bitOrderToUse == .straight ? 1 << (bitsCount - 1) : 1
+    func write(number: Int, bitsCount: Int) {
+        var mask = self.bitOrder == .straight ? 1 << (bitsCount - 1) : 1
         for _ in 0..<bitsCount {
             self.write(bit: number & mask > 0 ? 1 : 0)
-            switch bitOrderToUse {
+            switch self.bitOrder {
             case .straight:
                 mask >>= 1
             case .reversed: