diff --git a/Documentation/watchdog/watchdog-api.rst b/Documentation/watchdog/watchdog-api.rst
index 800dcd7586f2..78e228c272cf 100644
--- a/Documentation/watchdog/watchdog-api.rst
+++ b/Documentation/watchdog/watchdog-api.rst
@@ -249,7 +249,7 @@ Note that not all devices support these two calls, and some only
 support the GETBOOTSTATUS call.
 
 Some drivers can measure the temperature using the GETTEMP ioctl.  The
-returned value is the temperature in degrees fahrenheit::
+returned value is the temperature in degrees Fahrenheit::
 
     int temperature;
     ioctl(fd, WDIOC_GETTEMP, &temperature);