diff --git a/esphome/components/esp8266/gpio.py b/esphome/components/esp8266/gpio.py
index 0ebfbd6f69..fa5c94dff5 100644
--- a/esphome/components/esp8266/gpio.py
+++ b/esphome/components/esp8266/gpio.py
@@ -107,9 +107,9 @@ def validate_supports(value):
         raise cv.Invalid(
             "Open-drain only works with output mode", [CONF_MODE, CONF_OPEN_DRAIN]
         )
-    if is_pullup and num == 0:
+    if is_pullup and num == 16:
         raise cv.Invalid(
-            "GPIO Pin 0 does not support pullup pin mode. "
+            "GPIO Pin 16 does not support pullup pin mode. "
             "Please choose another pin.",
             [CONF_MODE, CONF_PULLUP],
         )
diff --git a/tests/test3.yaml b/tests/test3.yaml
index 73e314c94c..f7cba5e787 100644
--- a/tests/test3.yaml
+++ b/tests/test3.yaml
@@ -1150,7 +1150,7 @@ servo:
 ttp229_lsf:
 
 ttp229_bsf:
-  sdo_pin: D0
+  sdo_pin: D2
   scl_pin: D1
 
 sim800l: