diff --git a/src/os/windows/win32.cpp b/src/os/windows/win32.cpp
index 85bb055bdf..a91b6354e8 100644
--- a/src/os/windows/win32.cpp
+++ b/src/os/windows/win32.cpp
@@ -274,7 +274,7 @@ void DetermineBasePaths(const char *exe)
 	} else {
 		/* Use the folder of the config file as working directory. */
 		wchar_t config_dir[MAX_PATH];
-		wcsncpy(path, convert_to_fs(_config_file, path, lengthof(path)), lengthof(path));
+		convert_to_fs(_config_file, path, lengthof(path));
 		if (!GetFullPathName(path, static_cast<DWORD>(std::size(config_dir)), config_dir, nullptr)) {
 			Debug(misc, 0, "GetFullPathName failed ({})", GetLastError());
 			_searchpaths[SP_WORKING_DIR].clear();
@@ -292,7 +292,7 @@ void DetermineBasePaths(const char *exe)
 		_searchpaths[SP_BINARY_DIR].clear();
 	} else {
 		wchar_t exec_dir[MAX_PATH];
-		wcsncpy(path, convert_to_fs(exe, path, std::size(path)), std::size(path));
+		convert_to_fs(exe, path, std::size(path));
 		if (!GetFullPathName(path, static_cast<DWORD>(std::size(exec_dir)), exec_dir, nullptr)) {
 			Debug(misc, 0, "GetFullPathName failed ({})", GetLastError());
 			_searchpaths[SP_BINARY_DIR].clear();