diff --git a/python/obitools3/libalign/_solexapairend.pyx b/python/obitools3/libalign/_solexapairend.pyx
index d708408..ec1d5ff 100755
--- a/python/obitools3/libalign/_solexapairend.pyx
+++ b/python/obitools3/libalign/_solexapairend.pyx
@@ -259,7 +259,7 @@ def buildJoinedSequence(ali, reverse, seq, forward=None):
     seq[b"pairedend_limit"]=len(forward)
     seq[b"seq_length"] = ali.consensus_len
     seq[b"overlap_length"] = ali.overlap_len
-    if ali.consensus_len > 0:
+    if ali.overlap_len > 0:
         seq[b'score_norm']=round(float(ali.score)/ali.overlap_len, 3)
     else:
         seq[b"score_norm"]=0.0
diff --git a/python/obitools3/version.py b/python/obitools3/version.py
index c015697..7b8a647 100755
--- a/python/obitools3/version.py
+++ b/python/obitools3/version.py
@@ -1,5 +1,5 @@
 major = 3
 minor = 0
-serial= '0b29'
+serial= '0b30'
 
 version ="%d.%d.%s" % (major,minor,serial)