diff --git a/backlog.md b/backlog.md
index 2f1e759d..7c536bf8 100644
--- a/backlog.md
+++ b/backlog.md
@@ -19,7 +19,8 @@ For now, I'm using a quick Java utility to process the backlog. Here are some co
 * Identify interesting germline for demo  
 * Keyframes in DNA Browser  
 
-+ Start DNA browser in random mode in the middle of movement
++ Fix position of creatures relative to speckled area  
++ Start DNA browser in random mode in the middle of movement  
 
 
 ##Database Persistence
diff --git a/src/main/java/org/nusco/narjillos/serializer/Persistence.java b/src/main/java/org/nusco/narjillos/serializer/Persistence.java
index b8fba2f3..5b6ad48e 100644
--- a/src/main/java/org/nusco/narjillos/serializer/Persistence.java
+++ b/src/main/java/org/nusco/narjillos/serializer/Persistence.java
@@ -121,7 +121,7 @@ private static String readExperimentData(String fileName) {
 
 	private static void checkVersion(String fileName) {
 		String fileNameWithoutExtension = stripExtension(fileName);
-		if (!fileNameWithoutExtension.matches("\\d+\\-\\d+\\.\\d+.\\d+")) {
+		if (!fileNameWithoutExtension.matches("\\d+\\-\\d+\\.\\d+.\\d+\\w*")) {
 			System.err.println("WARNING: This experiment doesn't contain a version in the filename. "
 					+ "I cannot check that it was generated by the same version of Narjillos that you're using now.");
 			return;