diff --git a/firmware/atmel_softpack_libraries/usb/device/core/USBDDriver.c b/firmware/atmel_softpack_libraries/usb/device/core/USBDDriver.c
index c9cb155c..058f5634 100644
--- a/firmware/atmel_softpack_libraries/usb/device/core/USBDDriver.c
+++ b/firmware/atmel_softpack_libraries/usb/device/core/USBDDriver.c
@@ -457,7 +457,7 @@ void USBDDriver_Initialize(
 
     if (pInterfaces != 0) {
 
-        memset(pInterfaces, sizeof(pInterfaces), 0);
+        memset(pInterfaces, 0, sizeof(*pInterfaces));
     }
 }