diff --git a/library/ccm.c b/library/ccm.c
index ca95b8eeb7..15efff79f0 100644
--- a/library/ccm.c
+++ b/library/ccm.c
@@ -266,7 +266,7 @@ int mbedtls_ccm_update_ad( mbedtls_ccm_context *ctx,
         return MBEDTLS_ERR_CCM_BAD_INPUT;
     }
 
-    if( ctx->add_len > 0 && add_len > 0 )
+    if( add_len > 0 )
     {
         if( ctx->state & CCM_STATE__AUTH_DATA_FINISHED )
         {