diff --git a/tests/suites/test_suite_cipher.chacha20.data b/tests/suites/test_suite_cipher.chacha20.data
index 117fce3..dfa0e76 100644
--- a/tests/suites/test_suite_cipher.chacha20.data
+++ b/tests/suites/test_suite_cipher.chacha20.data
@@ -1,3 +1,7 @@
+Decrypt empty buffer
+depends_on:MBEDTLS_CHACHAPOLY_C
+dec_empty_buf:MBEDTLS_CIPHER_CHACHA20:0:0
+
 Chacha20 RFC 7539 Test Vector #1
 depends_on:MBEDTLS_CHACHA20_C
 decrypt_test_vec:MBEDTLS_CIPHER_CHACHA20:-1:"0000000000000000000000000000000000000000000000000000000000000000":"000000000000000000000000":"76b8e0ada0f13d90405d6ae55386bd28bdd219b8a08ded1aa836efcc8b770dc7da41597c5157488d7724e03fb8d84a376a43b8f41518a11cc387b669b2ee6586":"00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000":"":"":0:0