diff --git a/src/Collections/Dictionary.hpp b/src/Collections/Dictionary.hpp
index 97031c8..e7b8e6f 100644
--- a/src/Collections/Dictionary.hpp
+++ b/src/Collections/Dictionary.hpp
@@ -50,7 +50,7 @@ namespace Arbutils::Collections {
             }
             return find->second;
 #else
-            return _map[key];
+            return _map.at(key);
 #endif
         }