Index: Ringtoets/Storage/test/Ringtoets.Storage.Core.TestUtil/RingtoetsProjectTestHelper.cs
===================================================================
diff -u -r8c95fc9da479837a27771196cd5bb1f1b0a009ae -r515d2904fa9dc9cb2411ae9b3ca5a81135f9d4cc
--- Ringtoets/Storage/test/Ringtoets.Storage.Core.TestUtil/RingtoetsProjectTestHelper.cs	(.../RingtoetsProjectTestHelper.cs)	(revision 8c95fc9da479837a27771196cd5bb1f1b0a009ae)
+++ Ringtoets/Storage/test/Ringtoets.Storage.Core.TestUtil/RingtoetsProjectTestHelper.cs	(.../RingtoetsProjectTestHelper.cs)	(revision 515d2904fa9dc9cb2411ae9b3ca5a81135f9d4cc)
@@ -595,7 +595,7 @@
                             UseBreakWater = random.NextBoolean(),
                             StormDuration =
                             {
-                                Mean = random.NextRoundedDouble()
+                                Mean = random.NextRoundedDouble(0.1, 1.0)
                             },
                             Structure = stabilityPointStructure,
                             ShouldIllustrationPointsBeCalculated = false
@@ -630,7 +630,7 @@
                             UseBreakWater = random.NextBoolean(),
                             StormDuration =
                             {
-                                Mean = random.NextRoundedDouble()
+                                Mean = random.NextRoundedDouble(0.1, 1.0)
                             },
                             Structure = stabilityPointStructure,
                             ShouldIllustrationPointsBeCalculated = true