diff --git a/rowers/dataprepnodjango.py b/rowers/dataprepnodjango.py
index da384fbd..8e830138 100644
--- a/rowers/dataprepnodjango.py
+++ b/rowers/dataprepnodjango.py
@@ -866,6 +866,8 @@ def update_agegroup_db(age,sex,weightcategory,wcdurations,wcpower,
     df['sex'] = sex
     df['age'] = age
     df['weightcategory'] = weightcategory
+    df.replace([np.inf,-np.inf],np.nan,inplace=True)
+    df.dropna(axis=0,inplace=True)
 
     if debug:
         engine = create_engine(database_url_debug, echo=False)