diff --git a/src/solver/optimisation/post_process_commands.cpp b/src/solver/optimisation/post_process_commands.cpp
index 6eec7acca5..0f177e8d9e 100644
--- a/src/solver/optimisation/post_process_commands.cpp
+++ b/src/solver/optimisation/post_process_commands.cpp
@@ -150,7 +150,7 @@ void UpdateMrgPriceAfterCSRcmd::execute(const optRuntimeData&)
             else
             {
                 hourlyResults.CoutsMarginauxHorairesCSR[hour]
-                  = hourlyResults.CoutsMarginauxHorairesCSR[hour];
+                  = hourlyResults.CoutsMarginauxHoraires[hour];
             }
 
             if (isHourTriggeredByCsr