diff --git a/firmware/target/arm/as3525/usb-drv-as3525v2.c b/firmware/target/arm/as3525/usb-drv-as3525v2.c
index d87ccb5f87..63f6e83dff 100644
--- a/firmware/target/arm/as3525/usb-drv-as3525v2.c
+++ b/firmware/target/arm/as3525/usb-drv-as3525v2.c
@@ -148,8 +148,7 @@ static void as3525v2_connect(void)
     GUSBCFG |= GUSBCFG_force_device_mode;
     usb_delay();
     /* 11) Do something that is probably CCU related but undocumented*/
-    CCU_USB &= ~0x1000;
-    usb_delay();
+    CCU_USB |= 0x1000;
     CCU_USB &= ~0x300000;
     usb_delay();
     /* 12) reset usb core parameters (dev addr, speed, ...) */