diff --git a/docs/en/api/preferences.rst b/docs/en/api/preferences.rst
index 2b06b78df07..ca443a9475d 100644
--- a/docs/en/api/preferences.rst
+++ b/docs/en/api/preferences.rst
@@ -524,7 +524,7 @@ Arduino-esp32 Preferences API
 
    .. code-block:: arduino
 
-      uint8_t getUChar(const char* key, uint8_t defaultValue = 0);
+      bool getBool(const char* key, bool defaultValue = false);
 
    ..