diff --git a/Lib/sqlite3/test/regression.py b/Lib/sqlite3/test/regression.py
index d07c237..2a519dc 100644
--- a/Lib/sqlite3/test/regression.py
+++ b/Lib/sqlite3/test/regression.py
@@ -167,6 +167,12 @@
         self.assertRaises(UnicodeEncodeError, setattr, con,
                           "isolation_level", u"\xe9")
 
+    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")
diff --git a/Modules/_sqlite/connection.c b/Modules/_sqlite/connection.c
index 309b168..7ee11a9 100644
--- a/Modules/_sqlite/connection.c
+++ b/Modules/_sqlite/connection.c
@@ -1051,6 +1051,12 @@
         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) {