diff --git a/cpu/rpx0xx/include/periph_cpu.h b/cpu/rpx0xx/include/periph_cpu.h
index bd6d40ff18..a0d7e0584d 100644
--- a/cpu/rpx0xx/include/periph_cpu.h
+++ b/cpu/rpx0xx/include/periph_cpu.h
@@ -636,7 +636,7 @@ void pll_start_sys(uint8_t ref_div,
                    uint8_t post_div_1, uint8_t post_div_2);
 
 /**
- * @brief   Start the PLL for the system clock
+ * @brief   Start the PLL for the USB clock
  *          output[MHz] = f_ref / @p ref_div * @p vco_feedback_scale / @p post_div_1 / @p post_div_2
  *
  * @note    Usual setting should be (12 MHz, 1, 40, 5, 2) to get a 48 MHz USB clock signal