diff --git a/boards/common/esp32s2/include/periph_conf_common.h b/boards/common/esp32s2/include/periph_conf_common.h
index 47c663e9c3..2258acf5b5 100644
--- a/boards/common/esp32s2/include/periph_conf_common.h
+++ b/boards/common/esp32s2/include/periph_conf_common.h
@@ -352,6 +352,7 @@ static const dwc2_usb_otg_fshs_config_t dwc2_usb_otg_fshs_config[] = {
     {
         .periph = USB_OTG_FS_PERIPH_BASE,
         .type = DWC2_USB_OTG_FS,
+        .phy = DWC2_USB_OTG_PHY_BUILTIN,
     }
 };
 
diff --git a/boards/common/esp32s3/include/periph_conf_common.h b/boards/common/esp32s3/include/periph_conf_common.h
index 0d6002f211..2e7c2a1232 100644
--- a/boards/common/esp32s3/include/periph_conf_common.h
+++ b/boards/common/esp32s3/include/periph_conf_common.h
@@ -352,6 +352,7 @@ static const dwc2_usb_otg_fshs_config_t dwc2_usb_otg_fshs_config[] = {
     {
         .periph = USB_OTG_FS_PERIPH_BASE,
         .type = DWC2_USB_OTG_FS,
+        .phy = DWC2_USB_OTG_PHY_BUILTIN,
     }
 };