diff --git a/solr/modules/analysis-extras/src/java/org/apache/solr/update/processor/DocumentCategorizerUpdateProcessorFactory.java b/solr/modules/analysis-extras/src/java/org/apache/solr/update/processor/DocumentCategorizerUpdateProcessorFactory.java
index 50bf908b1f4..a7bc5ffd1c5 100644
--- a/solr/modules/analysis-extras/src/java/org/apache/solr/update/processor/DocumentCategorizerUpdateProcessorFactory.java
+++ b/solr/modules/analysis-extras/src/java/org/apache/solr/update/processor/DocumentCategorizerUpdateProcessorFactory.java
@@ -130,7 +130,7 @@ public void init(NamedList<?> args) {
       throw new SolrException(SERVER_ERROR, "Init param '" + MODEL_PARAM + "' must be a <str>");
     }
     model = modelParam.toString();
-    log.info("In OpenNLP doccat - model: {}");
+    log.info("In OpenNLP doccat - model: {}", model);
 
     Object vocabParam = args.remove(VOCAB_PARAM);
     if (null == vocabParam) {