diff --git a/src/security/builtin_plugins/tests/encode_serialized_payload/src/encode_serialized_payload_utests.c b/src/security/builtin_plugins/tests/encode_serialized_payload/src/encode_serialized_payload_utests.c
index 56ad5c4e69..a96ef70209 100644
--- a/src/security/builtin_plugins/tests/encode_serialized_payload/src/encode_serialized_payload_utests.c
+++ b/src/security/builtin_plugins/tests/encode_serialized_payload/src/encode_serialized_payload_utests.c
@@ -543,7 +543,7 @@ static void encode_serialized_payload_check(uint32_t key_size, bool encrypted)
   DDS_Security_SecurityException exception = {NULL, 0, 0};
   DDS_Security_OctetSeq encoded_buffer = {0, 0, NULL};
   DDS_Security_OctetSeq extra_inline_qos;
-  DDS_Security_OctetSeq encoded_payload;
+  DDS_Security_OctetSeq encoded_payload = {0, 0, NULL};
   DDS_Security_OctetSeq plain_buffer;
   session_key_material *session_keys;
   struct crypto_header *header = NULL;