diff --git a/esphome/components/esp32/__init__.py b/esphome/components/esp32/__init__.py
index e9b0f1fd0a..fd28d80536 100644
--- a/esphome/components/esp32/__init__.py
+++ b/esphome/components/esp32/__init__.py
@@ -2004,7 +2004,8 @@ async def to_code(config):
     if not advanced[CONF_ENABLE_LWIP_MDNS_QUERIES]:
         add_idf_sdkconfig_option("CONFIG_LWIP_DNS_SUPPORT_MDNS_QUERIES", False)
     if not advanced[CONF_ENABLE_LWIP_BRIDGE_INTERFACE]:
-        add_idf_sdkconfig_option("CONFIG_LWIP_BRIDGEIF_MAX_PORTS", 0)
+        # Kconfig range is [1,63]; 0 gets clamped to the default.
+        add_idf_sdkconfig_option("CONFIG_LWIP_BRIDGEIF_MAX_PORTS", 1)
 
     _configure_lwip_max_sockets(conf)
 
@@ -2251,7 +2252,8 @@ async def to_code(config):
         add_idf_sdkconfig_option("CONFIG_FATFS_VOLUME_COUNT", 2)
     elif advanced[CONF_DISABLE_FATFS]:
         add_idf_sdkconfig_option("CONFIG_FATFS_LFN_NONE", True)
-        add_idf_sdkconfig_option("CONFIG_FATFS_VOLUME_COUNT", 0)
+        # Kconfig range is [1,10]; 0 gets clamped to the default.
+        add_idf_sdkconfig_option("CONFIG_FATFS_VOLUME_COUNT", 1)
 
     for name, value in conf[CONF_SDKCONFIG_OPTIONS].items():
         add_idf_sdkconfig_option(name, RawSdkconfigValue(value))