diff --git a/src/rda_python_common/PgDBI.py b/src/rda_python_common/PgDBI.py
index 0535b92..a0bf759 100644
--- a/src/rda_python_common/PgDBI.py
+++ b/src/rda_python_common/PgDBI.py
@@ -280,7 +280,7 @@ def starttran():
    else:
       try:
          pgdb.isolation_level
-      except OperationalError as e:
+      except PgSQL.OperationalError as e:
          pgconnect(0, 0, False)
       if pgdb.closed:
          pgconnect(0, 0, False)