diff --git a/sql_server/pyodbc/compiler.py b/sql_server/pyodbc/compiler.py
index dc0be676..6349be87 100644
--- a/sql_server/pyodbc/compiler.py
+++ b/sql_server/pyodbc/compiler.py
@@ -278,7 +278,7 @@ def as_sql(self):
         sql, params = super(SQLInsertCompiler, self).as_sql()
         meta = self.query.get_meta()
         quoted_table = self.connection.ops.quote_name(meta.db_table)
-        if meta.pk.attname in self.query.columns and meta.pk.__class__.__name__ == "AutoField":
+        if meta.pk.db_column in self.query.columns and meta.pk.__class__.__name__ == "AutoField":
             if len(self.query.columns) == 1 and not params:
                 sql = "INSERT INTO %s DEFAULT VALUES" % quoted_table
             else:
diff --git a/sql_server/pyodbc/query.py b/sql_server/pyodbc/query.py
index fbbed747..e8243e9e 100644
--- a/sql_server/pyodbc/query.py
+++ b/sql_server/pyodbc/query.py
@@ -73,7 +73,7 @@ def _insert_as_sql(self, *args, **kwargs):
             quoted_table = self.connection.ops.quote_name(meta.db_table)
             # Get (sql, params) from original InsertQuery.as_sql
             sql, params = self._orig_as_sql(*args, **kwargs)
-            if meta.pk.attname in self.columns and meta.pk.__class__.__name__ == "AutoField":
+            if meta.pk.db_column in self.columns and meta.pk.__class__.__name__ == "AutoField":
                 if len(self.columns) == 1 and not params:
                     sql = "INSERT INTO %s DEFAULT VALUES" % quoted_table
                 else: