diff --git a/org.hl7.fhir.r5/src/main/java/org/hl7/fhir/r5/context/SimpleWorkerContext.java b/org.hl7.fhir.r5/src/main/java/org/hl7/fhir/r5/context/SimpleWorkerContext.java
index df80345fc..698325000 100644
--- a/org.hl7.fhir.r5/src/main/java/org/hl7/fhir/r5/context/SimpleWorkerContext.java
+++ b/org.hl7.fhir.r5/src/main/java/org/hl7/fhir/r5/context/SimpleWorkerContext.java
@@ -320,10 +320,10 @@ public class SimpleWorkerContext extends BaseWorkerContext implements IWorkerCon
     try {
       txLog("Connect to "+client.getAddress());
       txClient = client;
-      if (log != null && log.endsWith(".txt")) {
-        txLog = new TextClientLogger(log);
-      } else {
+      if (log != null && (log.endsWith(".htm") || log.endsWith(".html"))) {
         txLog = new HTMLClientLogger(log);
+      } else {
+        txLog = new TextClientLogger(log);
       }
       txClient.setLogger(txLog);
       txClient.setUserAgent(userAgent);