diff --git a/webapp/src/edu/cornell/mannlib/vitro/webapp/controller/json/JsonObjectProducer.java b/webapp/src/edu/cornell/mannlib/vitro/webapp/controller/json/JsonObjectProducer.java
index 2af1b6b83..f69589ecf 100644
--- a/webapp/src/edu/cornell/mannlib/vitro/webapp/controller/json/JsonObjectProducer.java
+++ b/webapp/src/edu/cornell/mannlib/vitro/webapp/controller/json/JsonObjectProducer.java
@@ -51,7 +51,7 @@ public abstract class JsonObjectProducer extends JsonProducer {
 		try {
 			jsonObject = process();
 		} catch (Exception e) {
-			log.error("Failed to create JSON response" + e);
+			log.error("Failed to create JSON response", e);
 			errorMessage = e.toString();
 			resp.setStatus(500 /* HttpURLConnection.HTTP_SERVER_ERROR */);
 		}
diff --git a/webapp/src/edu/cornell/mannlib/vitro/webapp/controller/json/JsonProducer.java b/webapp/src/edu/cornell/mannlib/vitro/webapp/controller/json/JsonProducer.java
index 86ce2da05..a1a5e2c0d 100644
--- a/webapp/src/edu/cornell/mannlib/vitro/webapp/controller/json/JsonProducer.java
+++ b/webapp/src/edu/cornell/mannlib/vitro/webapp/controller/json/JsonProducer.java
@@ -80,7 +80,7 @@ public abstract class JsonProducer {
 		VClass vclass = vreq.getWebappDaoFactory().getVClassDao()
 				.getVClassByURI(uri);
 		if (vclass == null) {
-			log.error("Couldn't retrieve vclass ");
+			log.error("Couldn't retrieve vclass '" + uri + "'");
 			throw new IllegalStateException("Class " + uri + " not found");
 		}
 		return vclass;