diff --git a/src/edmonds.cpp b/src/edmonds.cpp
index d5a8073..6918b43 100644
--- a/src/edmonds.cpp
+++ b/src/edmonds.cpp
@@ -178,7 +178,7 @@ void maximum_matching_from_initial_matching(Graph & graph)
                }
                if (graph.rho(y_path.front()) != blossom_root_id)
                {
-                  graph.node(x_path.front()).phi = x_path.front();
+                  graph.node(y_path.front()).phi = x_path.front();
                }
 
                // Update root indices