diff --git a/opm/simulators/wells/GroupState.cpp b/opm/simulators/wells/GroupState.cpp
index ae7be4672..b85186235 100644
--- a/opm/simulators/wells/GroupState.cpp
+++ b/opm/simulators/wells/GroupState.cpp
@@ -38,6 +38,7 @@ bool GroupState::operator==(const GroupState& other) const {
            this->inj_potentials == other.inj_potentials &&
            this->inj_rein_rates == other.inj_rein_rates &&
            this->inj_vrep_rate == other.inj_vrep_rate &&
+           this->inj_surface_rates == other.inj_surface_rates &&
            this->m_grat_sales_target == other.m_grat_sales_target &&
            this->injection_controls == other.injection_controls;
 }
diff --git a/opm/simulators/wells/GroupState.hpp b/opm/simulators/wells/GroupState.hpp
index 2c53e618b..525265cc9 100644
--- a/opm/simulators/wells/GroupState.hpp
+++ b/opm/simulators/wells/GroupState.hpp
@@ -112,6 +112,7 @@ public:
             iterateContainer(inj_red_rates, func);
             iterateContainer(inj_resv_rates, func);
             iterateContainer(inj_rein_rates, func);
+            iterateContainer(inj_surface_rates, func);
         };
 
         // Compute the size of the data.