diff --git a/library/ccm.c b/library/ccm.c
index 424ee77..d52e7b0 100644
--- a/library/ccm.c
+++ b/library/ccm.c
@@ -386,7 +386,9 @@
 
     if( diff != 0 )
     {
+#ifndef MBEDTLS_INTERNAL_CCM_NO_ZEROIZE_ON_TAG_FAIL
         mbedtls_platform_zeroize( output, length );
+#endif
         return( MBEDTLS_ERR_CCM_AUTH_FAILED );
     }