diff --git a/premake5.lua b/premake5.lua
index c00d8bc3..35554fdf 100644
--- a/premake5.lua
+++ b/premake5.lua
@@ -206,7 +206,7 @@ workspace "iw4x"
 	configurations {"Debug", "Release"}
 
 	language "C++"
-	cppdialect "C++23"
+	cppdialect "C++20"
 
 	architecture "x86"
 	platforms "Win32"
diff --git a/src/Components/Modules/Download.cpp b/src/Components/Modules/Download.cpp
index 51de1891..e32e161a 100644
--- a/src/Components/Modules/Download.cpp
+++ b/src/Components/Modules/Download.cpp
@@ -890,12 +890,12 @@ namespace Components
 
 	bool Download::ClientDownload::File::allowed() const
 	{
-		if (name.contains("..") || name.contains(":"))
+		if (Utils::String::Contains(name, "..") || Utils::String::Contains(name, ":"))
 		{
 			return false;
 		}
 
-		if (name.contains("\\") || name.contains("/"))
+		if (Utils::String::Contains(name, "\\") || Utils::String::Contains(name, "/"))
 		{
 			return false;
 		}
diff --git a/src/Utils/String.cpp b/src/Utils/String.cpp
index a0fed218..fa192164 100644
--- a/src/Utils/String.cpp
+++ b/src/Utils/String.cpp
@@ -114,6 +114,16 @@ namespace Utils::String
 		return std::equal(needle.rbegin(), needle.rend(), haystack.rbegin());
 	}
 
+	bool Contains(const std::string& haystack, const std::string& needle)
+	{
+		if (haystack.find(needle) != std::string::npos) 
+		{
+			return true;
+		} 
+		
+		return false;
+	}		
+
 	bool IsNumber(const std::string& str)
 	{
 		return !str.empty() && std::find_if(str.begin(), str.end(), [](unsigned char input)
diff --git a/src/Utils/String.hpp b/src/Utils/String.hpp
index 0c90d90b..53675484 100644
--- a/src/Utils/String.hpp
+++ b/src/Utils/String.hpp
@@ -129,6 +129,7 @@ namespace Utils::String
 
 	[[nodiscard]] bool StartsWith(const std::string& haystack, const std::string& needle);
 	[[nodiscard]] bool EndsWith(const std::string& haystack, const std::string& needle);
+	[[nodiscard]] bool Contains(const std::string& haystack, const std::string& needle);
 
 	[[nodiscard]] bool IsNumber(const std::string& str);