Index: Ringtoets/Integration/src/Ringtoets.Integration.Data/Assembly/CombinedAssemblyFailureMechanismInputFactory.cs
===================================================================
diff -u -rc1220f5afd9d51169dddcca4e190247713be068b -r6dcab965aa6652fb8061af4915730dbb419ebd08
--- Ringtoets/Integration/src/Ringtoets.Integration.Data/Assembly/CombinedAssemblyFailureMechanismInputFactory.cs	(.../CombinedAssemblyFailureMechanismInputFactory.cs)	(revision c1220f5afd9d51169dddcca4e190247713be068b)
+++ Ringtoets/Integration/src/Ringtoets.Integration.Data/Assembly/CombinedAssemblyFailureMechanismInputFactory.cs	(.../CombinedAssemblyFailureMechanismInputFactory.cs)	(revision 6dcab965aa6652fb8061af4915730dbb419ebd08)
@@ -26,6 +26,7 @@
 using Ringtoets.Common.Data.FailureMechanism;
 using Ringtoets.Common.Data.Probability;
 using Ringtoets.GrassCoverErosionInwards.Data;
+using Ringtoets.MacroStabilityInwards.Data;
 using Ringtoets.Piping.Data;
 
 namespace Ringtoets.Integration.Data.Assembly
@@ -78,6 +79,17 @@
                                                                                .ToArray()));
             }
 
+            MacroStabilityInwardsFailureMechanism macroStabilityInwardsFailureMechanism = assessmentSection.MacroStabilityInwards;
+            if (failureMechanisms.Contains(macroStabilityInwardsFailureMechanism))
+            {
+                inputs.Add(CreateCombinedAssemblyFailureMechanismInputItem(fm => fm.MacroStabilityInwardsProbabilityAssessmentInput.GetN(
+                                                                               fm.MacroStabilityInwardsProbabilityAssessmentInput.SectionLength),
+                                                                           macroStabilityInwardsFailureMechanism,
+                                                                           CreateCombinedSections(macroStabilityInwardsFailureMechanism.SectionResults,
+                                                                                                  assessmentSection, MacroStabilityInwardsAssemblyFunc)
+                                                                               .ToArray()));
+            }
+
             return inputs;
         }
 
@@ -133,6 +145,15 @@
             }
         }
 
+        private static Func<MacroStabilityInwardsFailureMechanismSectionResult, AssessmentSection, FailureMechanismSectionAssemblyCategoryGroup> MacroStabilityInwardsAssemblyFunc
+        {
+            get
+            {
+                return (sectionResult, assessmentSection) => MacroStabilityInwardsFailureMechanismAssemblyFactory.GetSectionAssemblyCategoryGroup(
+                    sectionResult, assessmentSection.MacroStabilityInwards, assessmentSection);
+            }
+        }
+
         #endregion
     }
 }
\ No newline at end of file
Index: Ringtoets/Integration/test/Ringtoets.Integration.Data.Test/Assembly/CombinedAssemblyFailureMechanismInputFactoryTest.cs
===================================================================
diff -u -rc1220f5afd9d51169dddcca4e190247713be068b -r6dcab965aa6652fb8061af4915730dbb419ebd08
--- Ringtoets/Integration/test/Ringtoets.Integration.Data.Test/Assembly/CombinedAssemblyFailureMechanismInputFactoryTest.cs	(.../CombinedAssemblyFailureMechanismInputFactoryTest.cs)	(revision c1220f5afd9d51169dddcca4e190247713be068b)
+++ Ringtoets/Integration/test/Ringtoets.Integration.Data.Test/Assembly/CombinedAssemblyFailureMechanismInputFactoryTest.cs	(.../CombinedAssemblyFailureMechanismInputFactoryTest.cs)	(revision 6dcab965aa6652fb8061af4915730dbb419ebd08)
@@ -77,9 +77,10 @@
                     assessmentSection, failureMechanisms).ToArray();
 
                 // Assert
-                Assert.AreEqual(2, inputs.Length);
+                Assert.AreEqual(3, inputs.Length);
                 AssertInput(assessmentSection.Piping, fm => fm.PipingProbabilityAssessmentInput.GetN(fm.PipingProbabilityAssessmentInput.SectionLength), inputs[0]);
                 AssertInput(assessmentSection.GrassCoverErosionInwards, fm => fm.GeneralInput.N, inputs[1]);
+                AssertInput(assessmentSection.MacroStabilityInwards, fm => fm.MacroStabilityInwardsProbabilityAssessmentInput.GetN(fm.MacroStabilityInwardsProbabilityAssessmentInput.SectionLength), inputs[2]);
             }
         }