diff --git a/src/main/java/net/floodlightcontroller/linkdiscovery/internal/LinkStorageImpl.java b/src/main/java/net/floodlightcontroller/linkdiscovery/internal/LinkStorageImpl.java
index 98605b2..249d626 100644
--- a/src/main/java/net/floodlightcontroller/linkdiscovery/internal/LinkStorageImpl.java
+++ b/src/main/java/net/floodlightcontroller/linkdiscovery/internal/LinkStorageImpl.java
@@ -106,7 +106,8 @@
             /*
              * retry till we succeed?
              */
-        	log.error("addOrUpdateLink(): titan exception {} {}", new Object[]{op, lt});
+        	log.error("addOrUpdateLink(): titan exception {} {} {}", new Object[]{op, lt, e.toString()});
+        	e.printStackTrace();
         }
 	}
 	
@@ -159,7 +160,8 @@
             /*
              * retry till we succeed?
              */
-        	log.error("deleteLink(): titan exception {}", lt);
+        	log.error("deleteLink(): titan exception {} {}", new Object[]{lt, e.toString()});
+        	e.printStackTrace();
         }
 	}