diff --git a/tests/suites/test_suite_asn1parse.function b/tests/suites/test_suite_asn1parse.function
index 87901f8fa8e3..002d8c426980 100644
--- a/tests/suites/test_suite_asn1parse.function
+++ b/tests/suites/test_suite_asn1parse.function
@@ -779,7 +779,7 @@ void free_named_data_list( int length )
     for( i = 0; i < length; i++ )
     {
         mbedtls_asn1_named_data *new = NULL;
-        ASSERT_ALLOC( new, sizeof( mbedtls_asn1_named_data ) );
+        ASSERT_ALLOC( new, 1 );
         new->next = head;
         head = new;
     }
diff --git a/tests/suites/test_suite_ssl.function b/tests/suites/test_suite_ssl.function
index 7b5743ece6fc..d832853ee0ac 100644
--- a/tests/suites/test_suite_ssl.function
+++ b/tests/suites/test_suite_ssl.function
@@ -137,7 +137,7 @@ void init_handshake_options( handshake_test_options *opts )
     opts->resize_buffers = 1;
 #if defined(MBEDTLS_SSL_CACHE_C)
     opts->cache = NULL;
-    ASSERT_ALLOC( opts->cache, sizeof( mbedtls_ssl_cache_context ) );
+    ASSERT_ALLOC( opts->cache, 1 );
     mbedtls_ssl_cache_init( opts->cache );
 exit:
     return;