diff --git a/python/obitools3/parsers/ngsfilter.pyx b/python/obitools3/parsers/ngsfilter.pyx
index 023c11c..0761294 100644
--- a/python/obitools3/parsers/ngsfilter.pyx
+++ b/python/obitools3/parsers/ngsfilter.pyx
@@ -57,7 +57,7 @@ def ngsfilterIterator(lineiterator,
         split_line = line.split()
         tags = split_line.pop(2)
         tags = tags.split(b":")
-        for t_idx in range(2):
+        for t_idx in range(len(tags)):
             if tags[t_idx]==b"-" or tags[t_idx]==b"None" or tags[t_idx]==b"":
                 tags[t_idx] = nastring
         if len(tags) == 1:          # Forward and reverse tags are the same
diff --git a/python/obitools3/version.py b/python/obitools3/version.py
index ca73fc9..cb41a7c 100755
--- a/python/obitools3/version.py
+++ b/python/obitools3/version.py
@@ -1,5 +1,5 @@
 major = 3
 minor = 0
-serial= '0-beta4'
+serial= '0-beta5'
 
 version ="%d.%02d.%s" % (major,minor,serial)