diff --git a/vpp-api-test/vat/api_format.c b/vpp-api-test/vat/api_format.c
index c170147..aa87525 100644
--- a/vpp-api-test/vat/api_format.c
+++ b/vpp-api-test/vat/api_format.c
@@ -6492,6 +6492,9 @@
   u32 tx_sw_if_index;
   int tx_sw_if_index_set = 0;
 
+  /* Shut up coverity */
+  memset (dst_mac_address, 0, sizeof (dst_mac_address));
+
   while (unformat_check_input (i) != UNFORMAT_END_OF_INPUT)
     {
       if (unformat (i, "vrf %d", &inner_vrf_id))
@@ -10581,6 +10584,9 @@
   u8 hwaddr[6];
   u8 use_custom_mac = 0;
 
+  /* Shut up coverity */
+  memset (hwaddr, 0, sizeof (hwaddr));
+
   while (unformat_check_input (i) != UNFORMAT_END_OF_INPUT)
     {
       if (unformat (i, "socket %s", &file_name))
@@ -16112,6 +16118,10 @@
   u32 sid = ~0;
   u32 tmp;
 
+  /* Shut up coverity */
+  memset (dmac, 0, sizeof (dmac));
+  memset (smac, 0, sizeof (smac));
+
   while (unformat_check_input (i) != UNFORMAT_END_OF_INPUT)
     {
       if (unformat (i, "%U", unformat_sw_if_index, vam, &sw_if_index))