diff --git a/gradle.properties b/gradle.properties
index 58936ebc..b0ecc25e 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -25,4 +25,4 @@ assertj_version    = 3.21.0
 junit_version      = 5.8.2
 
 # Version of published artifacts
-version            = 7.8.83
+version            = 7.8.84
diff --git a/language/src/main/java/de/monticore/lang/sysmlv2/types3/SysMLBuiltInTypeRelations.java b/language/src/main/java/de/monticore/lang/sysmlv2/types3/SysMLBuiltInTypeRelations.java
new file mode 100644
index 00000000..8920d124
--- /dev/null
+++ b/language/src/main/java/de/monticore/lang/sysmlv2/types3/SysMLBuiltInTypeRelations.java
@@ -0,0 +1,31 @@
+package de.monticore.lang.sysmlv2.types3;
+
+import de.monticore.types.check.SymTypeExpression;
+
+/**
+ * Dient dazu die MontiCore Built-Ins (int, String, boolean, nat) mit den
+ * KerML-ScalarValues (Integer, String, Boolean, Natural/Positive) kompatibel
+ * zu machen.
+ */
+public class SysMLBuiltInTypeRelations extends de.monticore.types3.util.BuiltInTypeRelations{
+
+  @Override
+  public boolean isIntegralType(SymTypeExpression type) {
+    return super.isIntegralType(type)
+        || (type.isPrimitive()
+          && type.asPrimitive().getPrimitiveName().equals("nat"))
+        || (type.hasTypeInfo()
+          && (
+            type.getTypeInfo().getFullName().equals("ScalarValues.Integer") ||
+            type.getTypeInfo().getFullName().equals("ScalarValues.Natural") ||
+            type.getTypeInfo().getFullName().equals("ScalarValues.Positive"))
+    );
+  }
+
+  @Override
+  public boolean isBoolean(SymTypeExpression type) {
+    return super.isBoolean(type) ||
+      (type.hasTypeInfo() &&
+        type.getTypeInfo().getFullName().equals("ScalarValues.Boolean"));
+  }
+}
diff --git a/language/src/main/java/de/monticore/lang/sysmlv2/types3/SysMLSymTypeRelations.java b/language/src/main/java/de/monticore/lang/sysmlv2/types3/SysMLSymTypeRelations.java
index 471b5923..bd288f90 100644
--- a/language/src/main/java/de/monticore/lang/sysmlv2/types3/SysMLSymTypeRelations.java
+++ b/language/src/main/java/de/monticore/lang/sysmlv2/types3/SysMLSymTypeRelations.java
@@ -1,9 +1,6 @@
 package de.monticore.lang.sysmlv2.types3;
 
 import de.monticore.ocl.types3.OCLSymTypeRelations;
-import de.monticore.types.check.SymTypeExpression;
-import de.monticore.types3.util.BuiltInTypeRelations;
-import de.monticore.types3.util.SymTypeCompatibilityCalculator;
 import de.monticore.types3.util.SymTypeRelationsDefaultDelegatee;
 
 public abstract class SysMLSymTypeRelations extends OCLSymTypeRelations {
@@ -16,28 +13,7 @@ public static void init() {
   protected static class SysMLSymTypeRelationsDelegatee extends
       SymTypeRelationsDefaultDelegatee {
     public SysMLSymTypeRelationsDelegatee() {
-      builtInRelationsDelegate = new BuiltInTypeRelations() {
-        @Override
-        public boolean isIntegralType(SymTypeExpression type) {
-          return super.isIntegralType(type) ||
-              type.isPrimitive() &&
-                  type.asPrimitive().getPrimitiveName().equals("nat");
-        }
-
-        /*
-        Any Type that is included here will be compatible with any other Type
-        in the list.
-         */
-        @Override
-        public boolean isBoolean(SymTypeExpression type) {
-          return (super.isBoolean(type) ||
-            (
-              type.hasTypeInfo() &&
-              type.getTypeInfo().getFullName().equals("ScalarValues.Boolean")
-            )
-          );
-        }
-      };
+      builtInRelationsDelegate = new SysMLBuiltInTypeRelations();
     }
   }
 }
diff --git a/language/src/test/java/typecheck/CompareTypesTest.java b/language/src/test/java/typecheck/CompareTypesTest.java
index 26365858..c5bcdbf7 100644
--- a/language/src/test/java/typecheck/CompareTypesTest.java
+++ b/language/src/test/java/typecheck/CompareTypesTest.java
@@ -57,7 +57,8 @@ public void clear() {
 
   @ParameterizedTest
   @ValueSource(strings = {
-      "attribute target : boolean; attribute source : ScalarValues::Boolean;"
+      "attribute target : boolean; attribute source : ScalarValues::Boolean;",
+      "attribute target : ScalarValues::Integer; attribute source : int;",
   })
   public void test4CompatibleTypes(String targetAndSource) throws IOException {
     var type = typeOfConstraintExpression(targetAndSource);
@@ -70,7 +71,7 @@ public void test4CompatibleTypes(String targetAndSource) throws IOException {
   // int und ScalarValues::Integer sollte erlaubt sein, aber das muss noch implementiert werden
   @ParameterizedTest
   @ValueSource(strings = {
-      "attribute target : int; attribute source : ScalarValues::Integer;"
+      "attribute target : int; attribute source : ScalarValues::String;"
   })
   public void test4IncompatibleTypes(String targetAndSource) throws IOException {
     var type = typeOfConstraintExpression(targetAndSource);