diff --git a/org.hl7.fhir.validation/src/main/java/org/hl7/fhir/validation/special/TxTesterScrubbers.java b/org.hl7.fhir.validation/src/main/java/org/hl7/fhir/validation/special/TxTesterScrubbers.java
index 5d565f958..17e1af7ca 100644
--- a/org.hl7.fhir.validation/src/main/java/org/hl7/fhir/validation/special/TxTesterScrubbers.java
+++ b/org.hl7.fhir.validation/src/main/java/org/hl7/fhir/validation/special/TxTesterScrubbers.java
@@ -24,7 +24,7 @@ public class TxTesterScrubbers {
     }
 
     private boolean isManagedExtension(Extension extension) {
-      return !tight || !Utilities.isAbsoluteUrl(extension.getUrl()) || Utilities.existsInList(extension.getUrl(), 
+      return tight || !Utilities.isAbsoluteUrl(extension.getUrl()) || Utilities.existsInList(extension.getUrl(), 
           "http://hl7.org/fhir/StructureDefinition/codesystem-alternate", 
           "http://hl7.org/fhir/StructureDefinition/codesystem-conceptOrder",
           "http://hl7.org/fhir/StructureDefinition/codesystem-label",