diff --git a/matchbox-server/src/test/java/ch/ahdis/matchbox/test/MatchboxApiTest.java b/matchbox-server/src/test/java/ch/ahdis/matchbox/test/MatchboxApiTest.java
index 94c86457ec8..1ac68648f17 100644
--- a/matchbox-server/src/test/java/ch/ahdis/matchbox/test/MatchboxApiTest.java
+++ b/matchbox-server/src/test/java/ch/ahdis/matchbox/test/MatchboxApiTest.java
@@ -217,10 +217,11 @@ public void verifyCachingImplementationGuides() {
     assertEquals("n/a", this.getTxServer(contextR4, operationOutcome));
 
     // add new parameters should create a new validation engine for default validation
-    // operationOutcome = validationClient.validate(resource, profileCore);
-    // String sessionId3CoreTxNa = getSessionId(contextR4, operationOutcome);
-    // assertEquals(0, getValidationFailures((OperationOutcome) operationOutcome));
-    // assertNotEquals(sessionIdCore, sessionId3CoreTxNa);
+    operationOutcome = validationClient.validate(resource, profileCore, parameters);
+    String sessionId3CoreTxNa = getSessionId(contextR4, operationOutcome);
+    assertEquals(0, getValidationFailures((OperationOutcome) operationOutcome));
+    assertNotEquals(sessionIdCore, sessionId3CoreTxNa);
+    assertEquals("n/a", this.getTxServer(contextR4, operationOutcome));
   }
 
   @Test
diff --git a/matchbox-server/validation-fhir-tests.http b/matchbox-server/validation-fhir-tests.http
index 77b51f7e628..f0a6382f3a7 100644
--- a/matchbox-server/validation-fhir-tests.http
+++ b/matchbox-server/validation-fhir-tests.http
@@ -1,8 +1,8 @@
-@host = https://test.ahdis.ch/matchboxv3/fhir
-### @host = http://localhost:8080/matchboxv3/fhir
+### @host = https://test.ahdis.ch/matchboxv3/fhir
+@host = http://localhost:8081/matchboxv3/fhir
 ### @host = http://hapi.fhir.org/baseR4
 
-## No issues detected during validation
+### No issues detected during validation
 POST {{host}}/$validate?profile=http://hl7.org/fhir/StructureDefinition/Basic HTTP/1.1
 Accept: application/fhir+json
 Content-Type: application/fhir+xml
@@ -18,6 +18,22 @@ Content-Type: application/fhir+xml
   </code>
 </Basic>
 
+### No issues detected during validation
+POST {{host}}/$validate?profile=http://hl7.org/fhir/StructureDefinition/Basic&txServer=n/a HTTP/1.1
+Accept: application/fhir+json
+Content-Type: application/fhir+xml
+
+<Basic xmlns="http://hl7.org/fhir">
+  <code>
+    <coding>
+      <system value="http://snomed.info/sct"/>
+      <version value="http://snomed.info/sct/731000124108/version/20210201"/>
+      <code value="132037003"/>
+      <display value="Pineywoods pig breed"/>
+    </coding>
+  </code>
+</Basic>
+
 ### No issues detected during validation
 POST {{host}}/$validate?profile=http://fhir.ch/ig/ch-elm/StructureDefinition/ch-elm-document-strict HTTP/1.1
 Accept: application/fhir+json