diff --git a/edmonds.cpp b/edmonds.cpp
index 49ad801..f573bef 100644
--- a/edmonds.cpp
+++ b/edmonds.cpp
@@ -130,6 +130,7 @@ Graph maximum_matching_from_initial_matching(Graph & graph)
          }
       }
    }
+   return graph;
 };
 
 void find_greedy_matching(Graph & graph)