diff --git a/src/world/Level.hpp b/src/world/Level.hpp
index bf4eaabad..74485e7cf 100644
--- a/src/world/Level.hpp
+++ b/src/world/Level.hpp
@@ -2,6 +2,7 @@
 
 #include <memory>
 #include <vector>
+#include <string>
 #include <unordered_map>
 
 #include "typedefs.hpp"