diff --git a/org.hl7.fhir.r5/src/main/java/org/hl7/fhir/r5/model/TypeDetails.java b/org.hl7.fhir.r5/src/main/java/org/hl7/fhir/r5/model/TypeDetails.java
index 72340c0e6..6905e9ef4 100644
--- a/org.hl7.fhir.r5/src/main/java/org/hl7/fhir/r5/model/TypeDetails.java
+++ b/org.hl7.fhir.r5/src/main/java/org/hl7/fhir/r5/model/TypeDetails.java
@@ -34,6 +34,8 @@ package org.hl7.fhir.r5.model;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collection;
+import java.util.Collections;
+import java.util.Comparator;
 import java.util.HashSet;
 import java.util.List;
 import java.util.Set;
@@ -42,12 +44,21 @@ import org.hl7.fhir.exceptions.DefinitionException;
 import org.hl7.fhir.r5.context.IWorkerContext;
 import org.hl7.fhir.r5.model.ElementDefinition.ElementDefinitionBindingComponent;
 import org.hl7.fhir.r5.model.ExpressionNode.CollectionStatus;
+import org.hl7.fhir.r5.model.TypeDetails.ProfiledTypeSorter;
 import org.hl7.fhir.utilities.CommaSeparatedStringBuilder;
 import org.hl7.fhir.utilities.Utilities;
 
 
-
 public class TypeDetails {
+  public class ProfiledTypeSorter implements Comparator<ProfiledType> {
+
+    @Override
+    public int compare(ProfiledType o1, ProfiledType o2) {
+      return o1.uri.compareTo(o2.uri);
+    }
+
+  }
+
   public static final String FHIR_NS = "http://hl7.org/fhir/StructureDefinition/";
   public static final String FP_NS = "http://hl7.org/fhirpath/";
   public static final String FP_String = "http://hl7.org/fhirpath/System.String";
@@ -419,20 +430,30 @@ public class TypeDetails {
     }
     return false;
   }
+  
   public String describe() {
-    return getTypes().toString();
+    return Utilities.sorted(getTypes()).toString();
   }
+  
   public String describeMin() {
     CommaSeparatedStringBuilder b = new CommaSeparatedStringBuilder();
-    for (ProfiledType pt : types)
+    for (ProfiledType pt : sortedTypes(types))
       b.append(pt.describeMin());
     return b.toString();
   }
+  
+  private List<ProfiledType> sortedTypes(List<ProfiledType> types2) {
+    List<ProfiledType> list = new ArrayList<>();
+    Collections.sort(list, new ProfiledTypeSorter());
+    return list;
+  }
+  
   public String getType() {
     for (ProfiledType pt : types)
       return pt.uri;
     return null;
   }
+  
   @Override
   public String toString() {
     return (collectionStatus == null ? collectionStatus.SINGLETON.toString() : collectionStatus.toString()) + getTypes().toString();
diff --git a/org.hl7.fhir.validation/src/main/java/org/hl7/fhir/validation/instance/InstanceValidator.java b/org.hl7.fhir.validation/src/main/java/org/hl7/fhir/validation/instance/InstanceValidator.java
index 7f86fd091..5730242bd 100644
--- a/org.hl7.fhir.validation/src/main/java/org/hl7/fhir/validation/instance/InstanceValidator.java
+++ b/org.hl7.fhir.validation/src/main/java/org/hl7/fhir/validation/instance/InstanceValidator.java
@@ -4748,7 +4748,7 @@ public class InstanceValidator extends BaseValidator implements IResourceValidat
               throw new DefinitionException(context.formatMessagePlural(criteriaElement.getType().size(), I18nConstants.DISCRIMINATOR__IS_BASED_ON_TYPE_BUT_SLICE__IN__HAS_MULTIPLE_TYPES, discriminator, ed.getId(), profile.getVersionedUrl(), criteriaElement.typeSummary()));
             } else
               throw new DefinitionException(context.formatMessage(I18nConstants.DISCRIMINATOR__IS_BASED_ON_TYPE_BUT_SLICE__IN__HAS_NO_TYPES, discriminator, ed.getId(), profile.getVersionedUrl()));
-            if (discriminator.isEmpty()) {
+            if (discriminator.isEmpty()) {     
               expression.append(" and $this is " + type);
             } else {
               expression.append(" and " + discriminator + " is " + type);
@@ -4830,11 +4830,11 @@ public class InstanceValidator extends BaseValidator implements IResourceValidat
   private String makeTypeForFHIRPath(String type) {
     if (Utilities.isAbsoluteUrl(type)) {
       if (type.startsWith("http://hl7.org/fhir/StructureDefinition/")) {
-        return tail(type);
+        return typeTail(type);
       } else if (type.startsWith("http://hl7.org/cda/stds/core/StructureDefinition/")) {
-        return "CDA."+tail(type); 
+        return "CDA."+typeTail(type); 
       } else {
-        return tail(type); // todo?
+        return typeTail(type); // todo?
       }
     } else {
       String ptype = type.substring(0, 1).toLowerCase() + type.substring(1);
@@ -4846,6 +4846,10 @@ public class InstanceValidator extends BaseValidator implements IResourceValidat
     }
   }
 
+  private String typeTail(String type) {
+    return type.contains("/") ? type.substring(type.lastIndexOf("/")+1) : type;
+  }
+
   private boolean isBaseDefinition(String url) {
     boolean b = url.startsWith("http://hl7.org/fhir/") && !url.substring(40).contains("/");
     return b;