diff --git a/durastore/src/main/java/org/duracloud/durastore/aop/IngestAdvice.java b/durastore/src/main/java/org/duracloud/durastore/aop/IngestAdvice.java
index <HASH>..<HASH> 100644
--- a/durastore/src/main/java/org/duracloud/durastore/aop/IngestAdvice.java
+++ b/durastore/src/main/java/org/duracloud/durastore/aop/IngestAdvice.java
@@ -95,8 +95,13 @@ public class IngestAdvice
         }
         if (methodArgs != null) {
             for (Object obj : methodArgs) {
-                log.debug(pre2 + "method-arg: ");
-                log.debug(obj.toString());
+                String argValue;
+                if(obj == null) {
+                    argValue = "null";
+                } else {
+                    argValue = obj.toString();
+                }
+                log.debug(pre2 + "method-arg: " + argValue);
             }
         }
     }
Adds null check in debug print statements (null is a valid parameter value for content checksum, indicating that the checksum is not known and should be computed)

git-svn-id: <URL>