diff --git a/src/connector/python/README.md b/src/connector/python/README.md
index c48a2dac4ba52324f761e29ea4fc72d186a30309..f2fe156e79dcba72bbfbe45927355c345d55f3a8 100644
--- a/src/connector/python/README.md
+++ b/src/connector/python/README.md
@@ -154,7 +154,7 @@ stmt = conn.statement("insert into log values(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)")
 params = new_bind_params(16)
 params[0].timestamp(1626861392589)
 params[1].bool(True)
-params[2].null()
+params[2].tinyint(None)
 params[3].tinyint(2)
 params[4].smallint(3)
 params[5].int(4)
@@ -171,7 +171,7 @@ params[15].timestamp(1626861392589)
 stmt.bind_param(params)
 
 params[0].timestamp(1626861392590)
-params[15].null()
+params[15].timestamp(None)
 stmt.bind_param(params)
 stmt.execute()
 
diff --git a/tests/system-test/1-insert/stmt_error.py b/tests/system-test/1-insert/stmt_error.py
index 8961346034827ba3cdb57b1c33614e5413a2e4bf..cefc99f2295f2faf94766db9e345582b7ac1f555 100644
--- a/tests/system-test/1-insert/stmt_error.py
+++ b/tests/system-test/1-insert/stmt_error.py
@@ -54,7 +54,7 @@ class TDTestCase:
             params = new_bind_params(16)
             params[0].timestamp(1626861392589, PrecisionEnum.Milliseconds)
             params[1].bool(True)
-            params[2].null()
+            params[2].tinyint(None)
             params[3].tinyint(2)
             params[4].smallint(3)
             params[5].int(4)
@@ -120,7 +120,7 @@ class TDTestCase:
             params = new_bind_params(16)
             params[0].timestamp(1626861392589, PrecisionEnum.Milliseconds)
             params[1].bool(True)
-            params[2].null()
+            params[2].tinyint(None)
             params[3].tinyint(2)
             params[4].smallint(3)
             params[5].int(4)