Index: Ringtoets/HydraRing/src/Ringtoets.HydraRing.Calculation/Data/Variables/DeterministicHydraRingVariable.cs
===================================================================
diff -u -r92ce01ec6a2ac8d64f77a2a618c6b6e410a78812 -rb600ee186729ba8742b05408fbb2101f33f200ee
--- Ringtoets/HydraRing/src/Ringtoets.HydraRing.Calculation/Data/Variables/DeterministicHydraRingVariable.cs	(.../DeterministicHydraRingVariable.cs)	(revision 92ce01ec6a2ac8d64f77a2a618c6b6e410a78812)
+++ Ringtoets/HydraRing/src/Ringtoets.HydraRing.Calculation/Data/Variables/DeterministicHydraRingVariable.cs	(.../DeterministicHydraRingVariable.cs)	(revision b600ee186729ba8742b05408fbb2101f33f200ee)
@@ -34,7 +34,7 @@
         /// <param name="variableId">The Hydra-Ring id corresponding to the variable that is considered.</param>
         /// <param name="value">The value of the variable.</param>
         public DeterministicHydraRingVariable(int variableId, double value)
-            : base(variableId, HydraRingDeviationType.Standard)
+            : base(variableId)
         {
             this.value = value;
         }
@@ -54,5 +54,13 @@
                 return HydraRingDistributionType.Deterministic;
             }
         }
+
+        public override HydraRingDeviationType DeviationType
+        {
+            get
+            {
+                return HydraRingDeviationType.Standard;
+            }
+        }
     }
 }
\ No newline at end of file
Index: Ringtoets/HydraRing/src/Ringtoets.HydraRing.Calculation/Data/Variables/HydraRingVariable.cs
===================================================================
diff -u -re4b650bcd7124669562f76ab715f8efa97691d80 -rb600ee186729ba8742b05408fbb2101f33f200ee
--- Ringtoets/HydraRing/src/Ringtoets.HydraRing.Calculation/Data/Variables/HydraRingVariable.cs	(.../HydraRingVariable.cs)	(revision e4b650bcd7124669562f76ab715f8efa97691d80)
+++ Ringtoets/HydraRing/src/Ringtoets.HydraRing.Calculation/Data/Variables/HydraRingVariable.cs	(.../HydraRingVariable.cs)	(revision b600ee186729ba8742b05408fbb2101f33f200ee)
@@ -30,17 +30,14 @@
         private readonly double? defaultHydraRingNullValue = null;
 
         private readonly int variableId;
-        private readonly HydraRingDeviationType deviationType;
 
         /// <summary>
         /// Creates a new instance of the <see cref="HydraRingVariable"/> class.
         /// </summary>
         /// <param name="variableId">The Hydra-Ring id corresponding to the variable that is considered.</param>
-        /// <param name="deviationType">The deviation type in case the variable is random.</param>
-        protected HydraRingVariable(int variableId, HydraRingDeviationType deviationType)
+        protected HydraRingVariable(int variableId)
         {
             this.variableId = variableId;
-            this.deviationType = deviationType;
         }
 
         /// <summary>
@@ -71,15 +68,9 @@
         public abstract HydraRingDistributionType DistributionType { get; }
 
         /// <summary>
-        /// Gets the deviation type in case the variable is random.
+        /// Gets the deviation type of the variable..
         /// </summary>
-        public HydraRingDeviationType DeviationType
-        {
-            get
-            {
-                return deviationType;
-            }
-        }
+        public abstract HydraRingDeviationType DeviationType { get; }
 
         /// <summary>
         /// Gets the parameter 1 value in case the variable is random.
Index: Ringtoets/HydraRing/src/Ringtoets.HydraRing.Calculation/Data/Variables/RandomHydraRingVariable.cs
===================================================================
diff -u -r69ae0d0b75f56831b0058a4fcac37442a998e84e -rb600ee186729ba8742b05408fbb2101f33f200ee
--- Ringtoets/HydraRing/src/Ringtoets.HydraRing.Calculation/Data/Variables/RandomHydraRingVariable.cs	(.../RandomHydraRingVariable.cs)	(revision 69ae0d0b75f56831b0058a4fcac37442a998e84e)
+++ Ringtoets/HydraRing/src/Ringtoets.HydraRing.Calculation/Data/Variables/RandomHydraRingVariable.cs	(.../RandomHydraRingVariable.cs)	(revision b600ee186729ba8742b05408fbb2101f33f200ee)
@@ -26,6 +26,7 @@
     /// </summary>
     public abstract class RandomHydraRingVariable : HydraRingVariable
     {
+        private readonly HydraRingDeviationType deviationType;
         private readonly double mean;
         private readonly double variance;
 
@@ -37,8 +38,9 @@
         /// <param name="mean">The mean value of the variable.</param>
         /// <param name="variance">The variance value of the variable.</param>
         protected RandomHydraRingVariable(int variableId, HydraRingDeviationType deviationType, double mean, double variance)
-            : base(variableId, deviationType)
+            : base(variableId)
         {
+            this.deviationType = deviationType;
             this.mean = mean;
             this.variance = variance;
         }
@@ -70,5 +72,13 @@
                            : base.CoefficientOfVariation;
             }
         }
+
+        public override HydraRingDeviationType DeviationType
+        {
+            get
+            {
+                return deviationType;
+            }
+        }
     }
 }
\ No newline at end of file
Index: Ringtoets/HydraRing/test/Ringtoets.HydraRing.Calculation.Test/Data/Variables/HydraRingVariableTest.cs
===================================================================
diff -u -r92ce01ec6a2ac8d64f77a2a618c6b6e410a78812 -rb600ee186729ba8742b05408fbb2101f33f200ee
--- Ringtoets/HydraRing/test/Ringtoets.HydraRing.Calculation.Test/Data/Variables/HydraRingVariableTest.cs	(.../HydraRingVariableTest.cs)	(revision 92ce01ec6a2ac8d64f77a2a618c6b6e410a78812)
+++ Ringtoets/HydraRing/test/Ringtoets.HydraRing.Calculation.Test/Data/Variables/HydraRingVariableTest.cs	(.../HydraRingVariableTest.cs)	(revision b600ee186729ba8742b05408fbb2101f33f200ee)
@@ -32,12 +32,11 @@
         public void Constructor_ExpectedValues()
         {
             // Call
-            var hydraRingVariable = new TestHydraRingVariable(1, HydraRingDeviationType.Variation);
+            var hydraRingVariable = new TestHydraRingVariable(1);
 
             // Assert
             Assert.AreEqual(1, hydraRingVariable.VariableId);
             Assert.AreEqual(0, hydraRingVariable.Value);
-            Assert.AreEqual(HydraRingDeviationType.Variation, hydraRingVariable.DeviationType);
             Assert.AreEqual(0, hydraRingVariable.Parameter1);
             Assert.IsNull(hydraRingVariable.Parameter2);
             Assert.IsNull(hydraRingVariable.Parameter3);
@@ -47,8 +46,8 @@
 
         private class TestHydraRingVariable : HydraRingVariable
         {
-            public TestHydraRingVariable(int variableId, HydraRingDeviationType deviationType) 
-                : base(variableId, deviationType) {}
+            public TestHydraRingVariable(int variableId)
+                : base(variableId) {}
 
             public override HydraRingDistributionType DistributionType
             {
@@ -57,6 +56,14 @@
                     return HydraRingDistributionType.Normal;
                 }
             }
+
+            public override HydraRingDeviationType DeviationType
+            {
+                get
+                {
+                    return HydraRingDeviationType.Standard;
+                }
+            }
         }
     }
 }
\ No newline at end of file