diff --git a/validator/manifest.json b/validator/manifest.json
index 1a9cd435..51f87ad4 100644
--- a/validator/manifest.json
+++ b/validator/manifest.json
@@ -37361,6 +37361,26 @@
         }
       }
     },
+    {
+      "name": "profile-default-value",
+      "file": "profile-default-value.xml",
+      "description": "Check default values are not allowed",
+      "version": "4.0",
+      "java": {
+        "outcome": {
+          "resourceType" : "OperationOutcome",
+          "issue" : [{
+            "severity" : "error",
+            "code" : "invariant",
+            "details" : {
+              "text" : "Constraint failed: sdf-21: 'Default values can only be specified on specializations'"
+            },
+            "diagnostics" : "[1,50]",
+            "expression" : ["StructureDefinition"]
+          }]
+        }
+      }
+    },
     {
       "name": "zzz",
       "file": "zzz.json",
diff --git a/validator/profile-default-value.xml b/validator/profile-default-value.xml
new file mode 100644
index 00000000..3ad372a8
--- /dev/null
+++ b/validator/profile-default-value.xml
@@ -0,0 +1,20 @@
+<StructureDefinition xmlns="http://hl7.org/fhir">
+  <id value="profile-default-value"/>
+  <url value="http://hl7.org.au/fhir/test/StructureDefinition/profile-default-value"/>
+  <name value="ProfileDefaultValue"/>
+  <title value="profile-default-value"/>
+  <status value="draft"/>
+  <date value="2017-09-06T06:30:54+00:00"/>
+  <fhirVersion value="4.0.1"/>
+  <kind value="resource"/>
+  <abstract value="false"/>
+  <type value="Patient"/>
+  <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Patient"/>
+  <derivation value="constraint"/>
+  <differential>
+    <element id="Patient.active">
+      <path value="Patient.active"/>
+      <defaultValueBoolean value="true"/>
+    </element>
+  </differential>
+</StructureDefinition>
\ No newline at end of file