diff --git a/AK/BitStream.h b/AK/BitStream.h
index 3c7ef8ba0b..df7bdd1f5f 100644
--- a/AK/BitStream.h
+++ b/AK/BitStream.h
@@ -120,6 +120,15 @@ private:
 /// A stream wrapper class that allows you to read arbitrary amounts of bits
 /// in little-endian order from another stream.
 class LittleEndianInputBitStream : public Stream {
+    template<Unsigned T>
+    static constexpr T lsb_mask(T bits)
+    {
+        constexpr auto max = NumericLimits<T>::max();
+        constexpr auto digits = NumericLimits<T>::digits();
+
+        return bits == 0 ? 0 : max >> (digits - bits);
+    }
+
 public:
     explicit LittleEndianInputBitStream(MaybeOwned<Stream> stream)
         : m_stream(move(stream))
@@ -214,15 +223,6 @@ public:
 private:
     using BufferType = u64;
 
-    template<Unsigned T>
-    static constexpr T lsb_mask(T bits)
-    {
-        constexpr auto max = NumericLimits<T>::max();
-        constexpr auto digits = NumericLimits<T>::digits();
-
-        return bits == 0 ? 0 : max >> (digits - bits);
-    }
-
     ALWAYS_INLINE BufferType lsb_aligned_buffer() const
     {
         return m_bit_offset == bit_buffer_size ? 0 : m_bit_buffer >> m_bit_offset;