diff --git a/config/printer-biqu-bx-2021.cfg b/config/printer-biqu-bx-2021.cfg
index 01225fb87..a72516e09 100644
--- a/config/printer-biqu-bx-2021.cfg
+++ b/config/printer-biqu-bx-2021.cfg
@@ -152,11 +152,11 @@ max_z_accel: 1000
 pin: PA5
 
 [heater_fan extruder_fan]
-pin: PA6
+pin: PA7
 heater: extruder
 
 [controller_fan controller_fan]
-pin: PA7
+pin: PA6
 idle_timeout: 300 # 5 minute timeout
 
 [output_pin motor_power]