diff --git a/config/printer-creality-ender3-s1-2021.cfg b/config/printer-creality-ender3-s1-2021.cfg
index 33b77c7e..766dd0f8 100644
--- a/config/printer-creality-ender3-s1-2021.cfg
+++ b/config/printer-creality-ender3-s1-2021.cfg
@@ -7,7 +7,7 @@
 
 # If you prefer a direct serial connection, in "make menuconfig"
 # select "Enable extra low-level configuration options" and select
-# serial (on USB PA10/PA9), which is broken out on the 10 pin IDC
+# Serial (on USART2 PA3/PA2), which is broken out on the 10 pin IDC
 # cable used for the LCD module as follows:
 # 3: Tx, 4: Rx, 9: GND, 10: VCC
 
diff --git a/config/printer-creality-ender3-s1pro-2022.cfg b/config/printer-creality-ender3-s1pro-2022.cfg
index b742fbb5..9116eb05 100644
--- a/config/printer-creality-ender3-s1pro-2022.cfg
+++ b/config/printer-creality-ender3-s1pro-2022.cfg
@@ -7,7 +7,7 @@
 
 # If you prefer a direct serial connection, in "make menuconfig"
 # select "Enable extra low-level configuration options" and select
-# serial (on USB PA10/PA9), which is broken out on the 10 pin IDC
+# Serial (on USART2 PA3/PA2), which is broken out on the 10 pin IDC
 # cable used for the LCD module as follows:
 # 3: Tx, 4: Rx, 9: GND, 10: VCC