diff --git a/src/Helpers/BiMap.hpp b/src/Helpers/BiMap.hpp
index 348ce16d..ffce6b4c 100644
--- a/src/Helpers/BiMap.hpp
+++ b/src/Helpers/BiMap.hpp
@@ -66,6 +66,7 @@ namespace Bloom
 
         const TypeA& at(TypeB key) const {
             return this->flippedMap.at(key);
+            return this->flippedMap.at(key)->first;
         }
 
         std::unordered_map<TypeA, TypeB> getMap() const {