diff --git a/AK/ByteBuffer.h b/AK/ByteBuffer.h
index 43dec2cc58..9cc534ba5c 100644
--- a/AK/ByteBuffer.h
+++ b/AK/ByteBuffer.h
@@ -126,10 +126,10 @@ public:
     [[nodiscard]] ReadonlyBytes bytes() const { return { data(), size() }; }
 
     [[nodiscard]] AK::Span<u8> span() { return { data(), size() }; }
-    [[nodiscard]] AK::Span<const u8> span() const { return { data(), size() }; }
+    [[nodiscard]] AK::Span<u8 const> span() const { return { data(), size() }; }
 
-    [[nodiscard]] u8* offset_pointer(int offset) { return data() + offset; }
-    [[nodiscard]] u8 const* offset_pointer(int offset) const { return data() + offset; }
+    [[nodiscard]] u8* offset_pointer(size_t offset) { return data() + offset; }
+    [[nodiscard]] u8 const* offset_pointer(size_t offset) const { return data() + offset; }
 
     [[nodiscard]] void* end_pointer() { return data() + m_size; }
     [[nodiscard]] void const* end_pointer() const { return data() + m_size; }
@@ -226,7 +226,7 @@ public:
         if (data_size == 0)
             return {};
         VERIFY(data != nullptr);
-        int old_size = size();
+        auto old_size = size();
         TRY(try_resize(size() + data_size));
         __builtin_memcpy(this->data() + old_size, data, data_size);
         return {};