diff --git a/Firmware/Marlin_main.cpp b/Firmware/Marlin_main.cpp
index 59a19fd14..ab46a8946 100755
--- a/Firmware/Marlin_main.cpp
+++ b/Firmware/Marlin_main.cpp
@@ -7049,7 +7049,7 @@ Sigma_Exit:
 
 #if (defined(FANCHECK) && (((defined(TACH_0) && (TACH_0 >-1)) || (defined(TACH_1) && (TACH_1 > -1)))))
     /*!
-	### M123 - Tachometer value <a href="https://www.reprap.org/wiki/G-code#M123:_Tachometer_value_.28RepRap.29">M123: Tachometer value</a>
+	### M123 - Tachometer value <a href="https://www.reprap.org/wiki/G-code#M123:_Tachometer_value_.28RepRap_.26_Prusa.29">M123: Tachometer value</a>
   This command is used to report fan speeds and fan pwm values.
   #### Usage