diff --git a/src/Library/CreatureData/CreatureSpecies.hpp b/src/Library/CreatureData/CreatureSpecies.hpp
index 86b8e11..0281a9b 100644
--- a/src/Library/CreatureData/CreatureSpecies.hpp
+++ b/src/Library/CreatureData/CreatureSpecies.hpp
@@ -44,7 +44,7 @@ namespace CreatureLib::Library {
 
         void SetVariant(const std::string& name, const SpeciesVariant* variant);
 
-        const std::unordered_map<std::string, const SpeciesVariant*>& GetVariantsIterator() { return _variants; }
+        const std::unordered_map<std::string, const SpeciesVariant*>& GetVariantsIterator() const { return _variants; }
     };
 }