diff --git a/Lib/sqlite3/test/regression.py b/Lib/sqlite3/test/regression.py
index 2e61acf8cb9..da445519d96 100644
--- a/Lib/sqlite3/test/regression.py
+++ b/Lib/sqlite3/test/regression.py
@@ -176,6 +176,13 @@ class RegressionTests(unittest.TestCase):
         class MyStr(str): pass
         self.con.execute("select ?", (MyStr("abc"),))
 
+    def CheckConnectionCall(self):
+        """
+        Call a connection with a non-string SQL request: check error handling
+        of the statement constructor.
+        """
+        self.assertRaises(sqlite.Warning, self.con, 1)
+
 def suite():
     regression_suite = unittest.makeSuite(RegressionTests, "Check")
     return unittest.TestSuite((regression_suite,))
diff --git a/Modules/_sqlite/connection.c b/Modules/_sqlite/connection.c
index 08588bcdeee..4b8088d0f5e 100644
--- a/Modules/_sqlite/connection.c
+++ b/Modules/_sqlite/connection.c
@@ -979,6 +979,12 @@ PyObject* pysqlite_connection_call(pysqlite_Connection* self, PyObject* args, Py
         return NULL;
     }
 
+    statement->db = NULL;
+    statement->st = NULL;
+    statement->sql = NULL;
+    statement->in_use = 0;
+    statement->in_weakreflist = NULL;
+
     rc = pysqlite_statement_create(statement, self, sql);
 
     if (rc != SQLITE_OK) {