diff --git a/src/main/java/org/mastodon/mamut/io/MamutViewStateXMLSerialization.java b/src/main/java/org/mastodon/mamut/io/MamutViewStateXMLSerialization.java
index bc7cf8d19..eefc7f328 100644
--- a/src/main/java/org/mastodon/mamut/io/MamutViewStateXMLSerialization.java
+++ b/src/main/java/org/mastodon/mamut/io/MamutViewStateXMLSerialization.java
@@ -301,7 +301,7 @@ private static Map< String, Object > xmlToMap( final Element viewEl )
 				value = xmlToMap( el );
 				break;
 			default:
-				System.err.println( "Unknown GUI config parameter: " + key + " found in GUI file." );
+				System.out.println( "Unknown GUI config parameter: " + key + " found in GUI file." );
 				continue;
 			}
 			guiState.put( key, value );