diff --git a/Source/Core/Common/StringUtil.cpp b/Source/Core/Common/StringUtil.cpp
index 3083cc01f0..ba07db1206 100644
--- a/Source/Core/Common/StringUtil.cpp
+++ b/Source/Core/Common/StringUtil.cpp
@@ -656,6 +656,8 @@ std::string PathToString(const std::filesystem::path& path)
 #endif
 }
 
+namespace Common
+{
 #ifdef _WIN32
 std::vector<std::string> CommandLineToUtf8Argv(const wchar_t* command_line)
 {
@@ -675,8 +677,6 @@ std::vector<std::string> CommandLineToUtf8Argv(const wchar_t* command_line)
 }
 #endif
 
-namespace Common
-{
 std::string GetEscapedHtml(std::string html)
 {
   static constexpr std::array<std::array<const char*, 2>, 5> replacements{{
diff --git a/Source/Core/Common/StringUtil.h b/Source/Core/Common/StringUtil.h
index 84462b6c62..b18a25dd13 100644
--- a/Source/Core/Common/StringUtil.h
+++ b/Source/Core/Common/StringUtil.h
@@ -230,10 +230,6 @@ std::string ThousandSeparate(I value, int spaces = 0)
 #endif
 }
 
-#ifdef _WIN32
-std::vector<std::string> CommandLineToUtf8Argv(const wchar_t* command_line);
-#endif
-
 namespace Common
 {
 /// Returns whether a character is printable, i.e. whether 0x20 <= c <= 0x7e is true.
@@ -262,6 +258,10 @@ inline char ToUpper(char ch)
   return std::toupper(ch, std::locale::classic());
 }
 
+#ifdef _WIN32
+std::vector<std::string> CommandLineToUtf8Argv(const wchar_t* command_line);
+#endif
+
 std::string GetEscapedHtml(std::string html);
 
 void ToLower(std::string* str);
diff --git a/Source/Core/DolphinNoGUI/MainNoGUI.cpp b/Source/Core/DolphinNoGUI/MainNoGUI.cpp
index e8bb0958ab..9ba5de1e98 100644
--- a/Source/Core/DolphinNoGUI/MainNoGUI.cpp
+++ b/Source/Core/DolphinNoGUI/MainNoGUI.cpp
@@ -316,7 +316,7 @@ int main(int argc, char* argv[])
 #ifdef _WIN32
 int wmain(int, wchar_t*[], wchar_t*[])
 {
-  std::vector<std::string> args = CommandLineToUtf8Argv(GetCommandLineW());
+  std::vector<std::string> args = Common::CommandLineToUtf8Argv(GetCommandLineW());
   const int argc = static_cast<int>(args.size());
   std::vector<char*> argv(args.size());
   for (size_t i = 0; i < args.size(); ++i)
diff --git a/Source/Core/DolphinQt/Main.cpp b/Source/Core/DolphinQt/Main.cpp
index 7690f16315..a65f9d34fd 100644
--- a/Source/Core/DolphinQt/Main.cpp
+++ b/Source/Core/DolphinQt/Main.cpp
@@ -306,7 +306,7 @@ int main(int argc, char* argv[])
 #ifdef _WIN32
 int WINAPI wWinMain(_In_ HINSTANCE, _In_opt_ HINSTANCE, _In_ LPWSTR, _In_ int)
 {
-  std::vector<std::string> args = CommandLineToUtf8Argv(GetCommandLineW());
+  std::vector<std::string> args = Common::CommandLineToUtf8Argv(GetCommandLineW());
   const int argc = static_cast<int>(args.size());
   std::vector<char*> argv(args.size());
   for (size_t i = 0; i < args.size(); ++i)
diff --git a/Source/Core/DolphinTool/ToolMain.cpp b/Source/Core/DolphinTool/ToolMain.cpp
index 15b27ab95a..59613a17f6 100644
--- a/Source/Core/DolphinTool/ToolMain.cpp
+++ b/Source/Core/DolphinTool/ToolMain.cpp
@@ -54,7 +54,7 @@ int main(int argc, char* argv[])
 #ifdef _WIN32
 int wmain(int, wchar_t*[], wchar_t*[])
 {
-  std::vector<std::string> args = CommandLineToUtf8Argv(GetCommandLineW());
+  std::vector<std::string> args = Common::CommandLineToUtf8Argv(GetCommandLineW());
   const int argc = static_cast<int>(args.size());
   std::vector<char*> argv(args.size());
   for (size_t i = 0; i < args.size(); ++i)
diff --git a/Source/Core/WinUpdater/Main.cpp b/Source/Core/WinUpdater/Main.cpp
index 20aa398fd2..bcf814c78d 100644
--- a/Source/Core/WinUpdater/Main.cpp
+++ b/Source/Core/WinUpdater/Main.cpp
@@ -62,7 +62,7 @@ int WINAPI wWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, PWSTR pCmdLine
     return 0;
   }
 
-  std::vector<std::string> args = CommandLineToUtf8Argv(pCmdLine);
+  std::vector<std::string> args = Common::CommandLineToUtf8Argv(pCmdLine);
 
   return RunUpdater(args) ? 0 : 1;
 }