diff --git a/src/jrds/starter/ConnectionInfo.java b/src/jrds/starter/ConnectionInfo.java
index 80f9640d1..55c542fe3 100644
--- a/src/jrds/starter/ConnectionInfo.java
+++ b/src/jrds/starter/ConnectionInfo.java
@@ -58,7 +58,8 @@ public void register(StarterNode node) throws InvocationTargetException {
             node.registerStarter(cnx);
             logger.debug(Util.delayedFormatString("Connexion registred: %s for %s", cnx, node));
         } catch (InvocationTargetException ex) {
-            throw new InvocationTargetException(ex.getCause(), "Error during connection creation of type " + type.getName() + " for " + node + ": " + ex.getMessage());
+            String message = ex.getCause() != null ? ex.getCause().getMessage(): ex.getMessage();
+            throw new InvocationTargetException(ex.getCause(), "Error during connection creation of type " + type.getName() + " for " + node + ": " + message);
         } catch (Exception ex) {
             throw new InvocationTargetException(ex, "Error during connection creation of type " + type.getName() + " for " + node);
         }