diff --git a/ChangeLog b/ChangeLog
index 072113f8f..43e9f0ea8 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -5,6 +5,8 @@ mbed TLS ChangeLog (Sorted per branch, date)
 Bugfix
    * Fix a compilation issue with mbedtls_ecp_restart_ctx not being defined
      when MBEDTLS_ECP_ALT is defined. Reported by jwhui. Fixes #2242.
+   * Run the AD too long test only if MBEDTLS_CCM_ALT is not defined.
+     Raised as a comment in #1996.
 
 = mbed TLS 2.16.0 branch released 2018-12-21
 
diff --git a/tests/suites/test_suite_ccm.data b/tests/suites/test_suite_ccm.data
index 819b3b71f..ac9c565da 100644
--- a/tests/suites/test_suite_ccm.data
+++ b/tests/suites/test_suite_ccm.data
@@ -42,6 +42,7 @@ CCM lengths #6 tag length not even
 ccm_lengths:5:10:5:7:MBEDTLS_ERR_CCM_BAD_INPUT
 
 CCM lenghts #7 AD too long (2^16 - 2^8 + 1)
+depends_on:!MBEDTLS_CCM_ALT
 ccm_lengths:5:10:65281:8:MBEDTLS_ERR_CCM_BAD_INPUT
 
 CCM lengths #8 msg too long for this IV length (2^16, q = 2)