diff --git a/opm/parser/eclipse/EclipseState/Schedule/Events.hpp b/opm/parser/eclipse/EclipseState/Schedule/Events.hpp
index 4b26f5958..26bfe8baf 100644
--- a/opm/parser/eclipse/EclipseState/Schedule/Events.hpp
+++ b/opm/parser/eclipse/EclipseState/Schedule/Events.hpp
@@ -121,6 +121,11 @@ namespace Opm
              * Well switched between injector and producer
              */
             WELL_SWITCHED_INJECTOR_PRODUCER = (1 << 19),
+
+            /*
+             * The well has been affected in an ACTIONX keyword.
+             */
+            ACTIONX_WELL_EVENT = (1 << 20),
         };
     }
 
diff --git a/src/opm/parser/eclipse/EclipseState/Schedule/Schedule.cpp b/src/opm/parser/eclipse/EclipseState/Schedule/Schedule.cpp
index 7437f05fa..d5950b4d2 100644
--- a/src/opm/parser/eclipse/EclipseState/Schedule/Schedule.cpp
+++ b/src/opm/parser/eclipse/EclipseState/Schedule/Schedule.cpp
@@ -1194,6 +1194,12 @@ void Schedule::iterateScheduleSection(std::size_t load_start, std::size_t load_e
                                 &affected_wells,
                                 &target_wellpi);
         }
+        if (!affected_wells.empty()) {
+            this->snapshots.back().events().addEvent( ScheduleEvents::ACTIONX_WELL_EVENT );
+            for (const auto& well: affected_wells)
+                this->snapshots.back().wellgroup_events().addEvent(well, ScheduleEvents::ACTIONX_WELL_EVENT);
+        }
+
         if (reportStep < this->m_sched_deck.size() - 1)
             iterateScheduleSection(reportStep + 1, this->m_sched_deck.size(), parseContext, errors, true, &target_wellpi, nullptr, nullptr, prefix);
         OpmLog::info("\\----------------------------------------------------------------------");
diff --git a/tests/parser/ACTIONX.cpp b/tests/parser/ACTIONX.cpp
index ded0b9c63..523d7eecb 100644
--- a/tests/parser/ACTIONX.cpp
+++ b/tests/parser/ACTIONX.cpp
@@ -150,6 +150,22 @@ TSTEP
     BOOST_CHECK_EQUAL( affected_wells.size(), 1);
     BOOST_CHECK_EQUAL( affected_wells.count("W1"), 1);
 
+    {
+        const auto& wg_events = sched[0].wellgroup_events();
+        const auto& events = sched[0].events();
+        BOOST_CHECK(events.hasEvent(ScheduleEvents::ACTIONX_WELL_EVENT));
+        BOOST_CHECK(wg_events.hasEvent("W1", ScheduleEvents::ACTIONX_WELL_EVENT));
+        BOOST_CHECK(!wg_events.hasEvent("W2", ScheduleEvents::ACTIONX_WELL_EVENT));
+    }
+
+    {
+        const auto& wg_events = sched[1].wellgroup_events();
+        const auto& events = sched[1].events();
+        BOOST_CHECK(!events.hasEvent(ScheduleEvents::ACTIONX_WELL_EVENT));
+        BOOST_CHECK(!wg_events.hasEvent("W1", ScheduleEvents::ACTIONX_WELL_EVENT));
+        BOOST_CHECK(!wg_events.hasEvent("W2", ScheduleEvents::ACTIONX_WELL_EVENT));
+    }
+
     // The deck3 contains the 'GRID' keyword in the ACTIONX block - that is not a whitelisted keyword.
     ParseContext parseContext( {{ParseContext::ACTIONX_ILLEGAL_KEYWORD, InputError::THROW_EXCEPTION}} );
     BOOST_CHECK_THROW( make_schedule(WITH_GRID, parseContext), OpmInputError );