diff --git a/base/dll_win32.h b/base/dll_win32.h
index d11fa6105..0051a8997 100644
--- a/base/dll_win32.h
+++ b/base/dll_win32.h
@@ -1,5 +1,5 @@
 // LAF Base Library
-// Copyright (c) 2020 Igara Studio S.A.
+// Copyright (c) 2020-2024 Igara Studio S.A.
 // Copyright (c) 2016 David Capello
 //
 // This file is released under the terms of the MIT license.
@@ -47,10 +47,10 @@ std::string get_dll_filename(dll lib)
 {
   std::vector<wchar_t> buf(MAX_PATH);
   if (get_dll_filename_wchar(lib, buf) &&
-      buf.size() > 1)           // One char for the null char
-    return to_utf8(&buf[0], (int)buf.size()-1);
-  else
-    return std::string();
+      buf.size() > 1) {           // One char for the null char
+    return to_utf8(&buf[0], buf.size()-1);
+  }
+  return std::string();
 }
 
 Version get_dll_version(dll lib)
@@ -58,8 +58,7 @@ Version get_dll_version(dll lib)
   std::vector<wchar_t> buf(MAX_PATH);
   if (get_dll_filename_wchar(lib, buf))
     return get_file_version(&buf[0]);
-  else
-    return Version();
+  return Version();
 }
 
 } // namespace base
diff --git a/base/string.cpp b/base/string.cpp
index 3e064aaef..6942f97f7 100644
--- a/base/string.cpp
+++ b/base/string.cpp
@@ -1,5 +1,5 @@
 // LAF Base Library
-// Copyright (c) 2020-2022 Igara Studio S.A.
+// Copyright (c) 2020-2024 Igara Studio S.A.
 // Copyright (c) 2001-2016 David Capello
 //
 // This file is released under the terms of the MIT license.
@@ -71,7 +71,7 @@ std::string string_to_upper(const std::string& original)
 
 #ifdef LAF_WINDOWS
 
-std::string to_utf8(const wchar_t* src, const int n)
+std::string to_utf8(const wchar_t* src, const size_t n)
 {
   int required_size =
     ::WideCharToMultiByte(CP_UTF8, 0,
@@ -152,13 +152,13 @@ static std::size_t insert_utf8_char(std::string* result, wchar_t chr)
   return size;
 }
 
-std::string to_utf8(const wchar_t* src, const int n)
+std::string to_utf8(const wchar_t* src, const size_t n)
 {
   // Get required size to reserve a string so string::push_back()
   // doesn't need to reallocate its data.
   std::size_t required_size = 0;
   const auto* p = src;
-  for (int i=0; i<n; ++i, ++p)
+  for (size_t i=0; i<n; ++i, ++p)
     required_size += insert_utf8_char(nullptr, *p);
   if (!required_size)
     return "";
diff --git a/base/string.h b/base/string.h
index 6e2441bcb..08a8e60c1 100644
--- a/base/string.h
+++ b/base/string.h
@@ -1,5 +1,5 @@
 // LAF Base Library
-// Copyright (c) 2020-2022 Igara Studio S.A.
+// Copyright (c) 2020-2024 Igara Studio S.A.
 // Copyright (c) 2001-2017 David Capello
 //
 // This file is released under the terms of the MIT license.
@@ -21,10 +21,10 @@ namespace base {
   std::string string_to_lower(const std::string& original);
   std::string string_to_upper(const std::string& original);
 
-  std::string to_utf8(const wchar_t* src, const int n);
+  std::string to_utf8(const wchar_t* src, size_t n);
 
   inline std::string to_utf8(const std::wstring& widestring) {
-   return to_utf8(widestring.c_str(), (int)widestring.size());
+   return to_utf8(widestring.c_str(), widestring.size());
   }
 
   std::wstring from_utf8(const std::string& utf8string);