diff --git a/arch/arm/src/sam34/sam_udp.c b/arch/arm/src/sam34/sam_udp.c
index 85d92785cf..250e4f6739 100644
--- a/arch/arm/src/sam34/sam_udp.c
+++ b/arch/arm/src/sam34/sam_udp.c
@@ -1229,6 +1229,8 @@ static void sam_ep0_read(uint8_t *buffer, size_t buflen)
 {
   volatile const uint32_t *fifo;
 
+  usbtrace(TRACE_READ(EP0), buflen);
+
   /* Retrieve packet from the FIFO */
 
   fifo = (volatile const uint32_t *)SAM_UDPEP_FDR(EP0);