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-rw-r--r--docs/serial_driver.md2
1 files changed, 1 insertions, 1 deletions
diff --git a/docs/serial_driver.md b/docs/serial_driver.md
index 7fad23911a..c4b42f38dd 100644
--- a/docs/serial_driver.md
+++ b/docs/serial_driver.md
@@ -105,7 +105,7 @@ For STM32 MCUs several GPIO configuration options can be changed as well. See th
#define SERIAL_USART_TX_PAL_MODE 7 // Pin "alternate function", see the respective datasheet for the appropriate values for your MCU. default: 7
```
-1. Decide either for `SERIAL`, `SIO` or `PIO` subsystem, see the section ["Choosing a driver subsystem"](#choosing-a-driver-subsystem).
+4. Decide either for `SERIAL`, `SIO` or `PIO` subsystem, see the section ["Choosing a driver subsystem"](#choosing-a-driver-subsystem).
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