diff --git a/src/rp2_common/hardware_clocks/include/hardware/clocks.h b/src/rp2_common/hardware_clocks/include/hardware/clocks.h
index efba30b4..0110d32e 100644
--- a/src/rp2_common/hardware_clocks/include/hardware/clocks.h
+++ b/src/rp2_common/hardware_clocks/include/hardware/clocks.h
@@ -54,7 +54,7 @@ extern "C" {
  * GPIO in 1  | CLOCKS_CLK_GPOUTx_CTRL_AUXSRC_VALUE_CLKSRC_GPIN1   | CLOCKS_CLK_REF_CTRL_AUXSRC_VALUE_CLKSRC_GPIN1  | CLOCKS_CLK_SYS_CTRL_AUXSRC_VALUE_CLKSRC_GPIN1
  * USB PLL    | CLOCKS_CLK_GPOUTx_CTRL_AUXSRC_VALUE_CLKSRC_PLL_USB | CLOCKS_CLK_REF_CTRL_AUXSRC_VALUE_CLKSRC_PLL_USB| CLOCKS_CLK_SYS_CTRL_AUXSRC_VALUE_CLKSRC_PLL_USB
  * ROSC       | CLOCKS_CLK_GPOUTx_CTRL_AUXSRC_VALUE_ROSC_CLKSRC    |                                                | CLOCKS_CLK_SYS_CTRL_AUXSRC_VALUE_ROSC_CLKSRC
- * XOSC       | CLOCKS_CLK_GPOUTx_CTRL_AUXSRC_VALUE_XOSC_CLKSRC    |                                                | CLOCKS_CLK_SYS_CTRL_AUXSRC_VALUE_ROSC_CLKSRC
+ * XOSC       | CLOCKS_CLK_GPOUTx_CTRL_AUXSRC_VALUE_XOSC_CLKSRC    |                                                | CLOCKS_CLK_SYS_CTRL_AUXSRC_VALUE_XOSC_CLKSRC
  * System clock | CLOCKS_CLK_GPOUTx_CTRL_AUXSRC_VALUE_CLK_SYS      | | |
  * USB Clock  | CLOCKS_CLK_GPOUTx_CTRL_AUXSRC_VALUE_CLK_USB        | | |
  * ADC clock  | CLOCKS_CLK_GPOUTx_CTRL_AUXSRC_VALUE_CLK_ADC        | | |