diff --git a/include/zephyr/drivers/uart.h b/include/zephyr/drivers/uart.h
index 7d56a78b056cc..16a25323c0bfd 100644
--- a/include/zephyr/drivers/uart.h
+++ b/include/zephyr/drivers/uart.h
@@ -561,10 +561,11 @@ static inline int z_impl_uart_poll_in_u16(const struct device *dev,
 /**
  * @brief Write a character to the device for output.
  *
- * This routine checks if the transmitter is full.  When the
+ * This routine checks if the transmitter is full. When the
  * transmitter is not full, it writes a character to the data
- * register. It waits and blocks the calling thread, otherwise. This
- * function is a blocking call.
+ * register. It waits and blocks the calling thread otherwise. This
+ * function is a blocking call. It blocks the calling thread until the
+ * character is sent.
  *
  * To send a character when hardware flow control is enabled, the handshake
  * signal CTS must be asserted.