diff --git a/src/bitsea/static/DatasetExtractor.py b/src/bitsea/static/DatasetExtractor.py
index e0d1103d..ce43eb5c 100644
--- a/src/bitsea/static/DatasetExtractor.py
+++ b/src/bitsea/static/DatasetExtractor.py
@@ -36,6 +36,7 @@ def profileGenerator(self,TIME,lon,lat,values,depth,dataset):
         M[:,1] = lon
         M[:,2] = lat
         uniques,_,ib = self.unique_rows(M)
+        ib = np.squeeze(ib)
         
         nProfiles = len(uniques)