diff --git a/nifi-nar-bundles/nifi-standard-bundle/nifi-standard-content-viewer/src/main/java/org/apache/nifi/web/StandardContentViewerController.java b/nifi-nar-bundles/nifi-standard-bundle/nifi-standard-content-viewer/src/main/java/org/apache/nifi/web/StandardContentViewerController.java
index cf532c3a28..405b11c007 100644
--- a/nifi-nar-bundles/nifi-standard-bundle/nifi-standard-content-viewer/src/main/java/org/apache/nifi/web/StandardContentViewerController.java
+++ b/nifi-nar-bundles/nifi-standard-bundle/nifi-standard-content-viewer/src/main/java/org/apache/nifi/web/StandardContentViewerController.java
@@ -53,6 +53,7 @@ public class StandardContentViewerController extends HttpServlet {
     static {
         supportedMimeTypes.add("application/json");
         supportedMimeTypes.add("application/xml");
+        supportedMimeTypes.add("text/xml");
         supportedMimeTypes.add("text/plain");
         supportedMimeTypes.add("text/csv");
         supportedMimeTypes.add("application/avro-binary");
@@ -85,7 +86,7 @@ public class StandardContentViewerController extends HttpServlet {
                     final ObjectMapper mapper = new ObjectMapper();
                     final Object objectJson = mapper.readValue(content.getContentStream(), Object.class);
                     formatted = mapper.writerWithDefaultPrettyPrinter().writeValueAsString(objectJson);
-                } else if ("application/xml".equals(contentType)) {
+                } else if ("application/xml".equals(contentType) || "text/xml".equals(contentType)) {
                     // format xml
                     final StringWriter writer = new StringWriter();
 
diff --git a/nifi-nar-bundles/nifi-standard-bundle/nifi-standard-content-viewer/src/main/webapp/META-INF/nifi-content-viewer b/nifi-nar-bundles/nifi-standard-bundle/nifi-standard-content-viewer/src/main/webapp/META-INF/nifi-content-viewer
index e5e25f0f9f..f105ca2f0b 100644
--- a/nifi-nar-bundles/nifi-standard-bundle/nifi-standard-content-viewer/src/main/webapp/META-INF/nifi-content-viewer
+++ b/nifi-nar-bundles/nifi-standard-bundle/nifi-standard-content-viewer/src/main/webapp/META-INF/nifi-content-viewer
@@ -14,6 +14,7 @@
 # limitations under the License.
 application/xml
 application/json
+text/xml
 text/plain
 text/csv
 avro/binary