From 903485ab44da9db13253b1c15e333f00184ea8ed Mon Sep 17 00:00:00 2001
From: Erik Hide Saeternes <erikhs@simula.no>
Date: Tue, 2 Sep 2025 10:49:29 +0200
Subject: [PATCH] Fixed indexing in control-error filtering

---
 opm/simulators/timestepping/TimeStepControl.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/opm/simulators/timestepping/TimeStepControl.cpp b/opm/simulators/timestepping/TimeStepControl.cpp
index 8093db0268..184158fbc3 100644
--- a/opm/simulators/timestepping/TimeStepControl.cpp
+++ b/opm/simulators/timestepping/TimeStepControl.cpp
@@ -413,8 +413,8 @@ namespace Opm
         }
         else if (toleranceTestVersion_ == ToleranceTestVersions::ControlErrorFiltering)
         {
-            const std::array<double, 3> tempErrors{errors_[0], errors_[1], error};
-            const std::array<double, 3> tempTimeSteps{timeSteps_[0], timeSteps_[1], timeStepJustCompleted};
+            const std::array<double, 3> tempErrors{errors_[1], errors_[2], error};
+            const std::array<double, 3> tempTimeSteps{timeSteps_[1], timeSteps_[2], timeStepJustCompleted};
             const double stepFactor = timeStepFactor(tempErrors, tempTimeSteps);
             if (rejectCompletedStep_ && stepFactor < maxReductionTimeStep_)
             {