diff --git a/sam3s_example/simtrace/usb.c b/sam3s_example/simtrace/usb.c
index 923ce2df..5d5ec06f 100644
--- a/sam3s_example/simtrace/usb.c
+++ b/sam3s_example/simtrace/usb.c
@@ -352,7 +352,7 @@ const SIMTraceDriverConfigurationDescriptorPhone configurationDescriptorPhone =
     {
         sizeof(USBConfigurationDescriptor),
         USBGenericDescriptor_CONFIGURATION,
-        sizeof(SIMTraceDriverConfigurationDescriptorSniffer),
+        sizeof(SIMTraceDriverConfigurationDescriptorPhone),
         1, /* There is one interface in this configuration */
         CFG_NUM_PHONE, /* configuration number */
         PHONE_CONF_STR, /* string descriptor for this configuration */