diff --git a/src/main/resources/haddadin_automaton_flat.pnml b/src/main/resources/haddadin_automaton_flat.pnml
index 2823cbdfd74f4dbf8327564d4d13af669aa210ff..5e8b96258aca568810d8ed7915357de5212125c2 100644
--- a/src/main/resources/haddadin_automaton_flat.pnml
+++ b/src/main/resources/haddadin_automaton_flat.pnml
@@ -661,7 +661,7 @@
           <position x="652" y="402"/>
         </graphics>
       </arc>
-      <arc id="a17" source="Hfm2Fm" target="FRM">
+      <arc id="a17-duplicate" source="Hfm2Fm" target="FRM">
         <graphics>
           <line shape="line" color="#b0b0b0" width="1"/>
           <position x="637" y="425"/>