diff --git a/opm/input/eclipse/Schedule/Action/ActionContext.hpp b/opm/input/eclipse/Schedule/Action/ActionContext.hpp
index 02cf8fff0..1cccfa0f0 100644
--- a/opm/input/eclipse/Schedule/Action/ActionContext.hpp
+++ b/opm/input/eclipse/Schedule/Action/ActionContext.hpp
@@ -21,13 +21,13 @@
 #ifndef ActionContext_HPP
 #define ActionContext_HPP
 
-#include <string>
 #include <map>
-
-#include <opm/input/eclipse/Schedule/SummaryState.hpp>
+#include <string>
+#include <vector>
 
 namespace Opm {
 
+class SummaryState;
 class WListManager;
 
 namespace Action {
diff --git a/src/opm/input/eclipse/Schedule/Action/ActionContext.cpp b/src/opm/input/eclipse/Schedule/Action/ActionContext.cpp
index 22bda79b4..a8804947b 100644
--- a/src/opm/input/eclipse/Schedule/Action/ActionContext.cpp
+++ b/src/opm/input/eclipse/Schedule/Action/ActionContext.cpp
@@ -18,8 +18,11 @@
 */
 
 #include <opm/input/eclipse/Schedule/Action/ActionContext.hpp>
+
 #include <opm/common/utility/TimeService.hpp>
 
+#include <opm/input/eclipse/Schedule/SummaryState.hpp>
+
 namespace Opm {
 namespace Action {
 
diff --git a/src/opm/output/eclipse/AggregateActionxData.cpp b/src/opm/output/eclipse/AggregateActionxData.cpp
index e351d762a..66a19c97b 100644
--- a/src/opm/output/eclipse/AggregateActionxData.cpp
+++ b/src/opm/output/eclipse/AggregateActionxData.cpp
@@ -23,6 +23,7 @@
 #include <opm/output/eclipse/WriteRestartHelpers.hpp>
 
 #include <opm/input/eclipse/Schedule/Schedule.hpp>
+#include <opm/input/eclipse/Schedule/SummaryState.hpp>
 #include <opm/common/utility/String.hpp>
 
 #include <opm/input/eclipse/Schedule/UDQ/UDQConfig.hpp>
diff --git a/tests/test_Serialization.cpp b/tests/test_Serialization.cpp
index 3e0e225c2..0263b5496 100644
--- a/tests/test_Serialization.cpp
+++ b/tests/test_Serialization.cpp
@@ -52,6 +52,7 @@
 #include <opm/input/eclipse/EclipseState/IOConfig/IOConfig.hpp>
 #include <opm/input/eclipse/Schedule/GasLiftOpt.hpp>
 #include <opm/input/eclipse/Schedule/RSTConfig.hpp>
+#include <opm/input/eclipse/Schedule/SummaryState.hpp>
 #include <opm/input/eclipse/Schedule/Action/ActionResult.hpp>
 #include <opm/input/eclipse/Schedule/Action/State.hpp>
 #include <opm/input/eclipse/Schedule/Action/ActionAST.hpp>