diff --git a/src/fios.cpp b/src/fios.cpp
--- a/src/fios.cpp
+++ b/src/fios.cpp
@@ -342,7 +342,7 @@ static void FiosGetFileList(SaveLoadOper
 	struct dirent *dirent;
 	DIR *dir;
 	FiosItem *fios;
-	int sort_start;
+	size_t sort_start;
 	char d_name[sizeof(fios->name)];
 
 	file_list.Clear();