diff --git a/nifi/nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/test/java/org/apache/nifi/processors/standard/TestIdentifyMimeType.java b/nifi/nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/test/java/org/apache/nifi/processors/standard/TestIdentifyMimeType.java
index 1bf45853a9..97c4b3421f 100644
--- a/nifi/nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/test/java/org/apache/nifi/processors/standard/TestIdentifyMimeType.java
+++ b/nifi/nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/test/java/org/apache/nifi/processors/standard/TestIdentifyMimeType.java
@@ -72,6 +72,11 @@ public class TestIdentifyMimeType {
         expectedMimeTypes.put("1.xml", "application/xml");
         expectedMimeTypes.put("flowfilev3", "application/flowfile-v3");
         expectedMimeTypes.put("flowfilev1.tar", "application/flowfile-v1");
+        // Office documents below randomly selected from govdocs1:
+        // http://digitalcorpora.org/corpora/govdocs
+        expectedMimeTypes.put("651924.docx", "application/vnd.openxmlformats-officedocument.wordprocessingml.document");
+        expectedMimeTypes.put("528206.xlsx", "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");
+        expectedMimeTypes.put("392790.pptx", "application/vnd.openxmlformats-officedocument.presentationml.presentation");
 
         final Map<String, String> expectedExtensions = new HashMap<>();
         expectedExtensions.put("1.7z", ".7z");
@@ -90,6 +95,9 @@ public class TestIdentifyMimeType {
         expectedExtensions.put("1.xml", ".xml");
         expectedExtensions.put("flowfilev3", "");
         expectedExtensions.put("flowfilev1.tar", "");
+        expectedExtensions.put("651924.docx", ".docx");
+        expectedExtensions.put("528206.xlsx", ".xlsx");
+        expectedExtensions.put("392790.pptx", ".pptx");
 
         final List<MockFlowFile> filesOut = runner.getFlowFilesForRelationship(IdentifyMimeType.REL_SUCCESS);
         for (final MockFlowFile file : filesOut) {
diff --git a/nifi/nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/test/resources/TestIdentifyMimeType/392790.pptx b/nifi/nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/test/resources/TestIdentifyMimeType/392790.pptx
new file mode 100644
index 0000000000..84000b9ba0
Binary files /dev/null and b/nifi/nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/test/resources/TestIdentifyMimeType/392790.pptx differ
diff --git a/nifi/nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/test/resources/TestIdentifyMimeType/528206.xlsx b/nifi/nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/test/resources/TestIdentifyMimeType/528206.xlsx
new file mode 100644
index 0000000000..4ce41fc176
Binary files /dev/null and b/nifi/nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/test/resources/TestIdentifyMimeType/528206.xlsx differ
diff --git a/nifi/nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/test/resources/TestIdentifyMimeType/651924.docx b/nifi/nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/test/resources/TestIdentifyMimeType/651924.docx
new file mode 100644
index 0000000000..837dfa1f7d
Binary files /dev/null and b/nifi/nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/test/resources/TestIdentifyMimeType/651924.docx differ