diff --git a/tools/conv.py b/tools/conv.py
index dbe75063..4a9ad0d5 100644
--- a/tools/conv.py
+++ b/tools/conv.py
@@ -155,7 +155,7 @@ def build_insert_query(schema, tableName, columns):
 def to_column_type(columnType):
     if columnType == "TIMESTAMP":
         return "to_timestamp(%s)"
-    if columnType == "BOOLEAN":
+    if columnType in ["BOOLEAN", "BOOL"]:
         return "%s::boolean"
     return "%s"