diff --git a/tests/suites/test_suite_psa_crypto.function b/tests/suites/test_suite_psa_crypto.function
index 8a08b1c..a66ad75 100644
--- a/tests/suites/test_suite_psa_crypto.function
+++ b/tests/suites/test_suite_psa_crypto.function
@@ -506,7 +506,7 @@
 
             if( output_data && output_part_length )
             {
-                memcpy( ( output_data + part_offset ), part_data,
+                memcpy( ( output_data + output_length ), part_data,
                         output_part_length );
             }