diff --git a/tests/suites/test_suite_block_cipher.function b/tests/suites/test_suite_block_cipher.function
index 2b166ba50a..3350b0f26b 100644
--- a/tests/suites/test_suite_block_cipher.function
+++ b/tests/suites/test_suite_block_cipher.function
@@ -97,6 +97,7 @@ exit:
 void block_cipher_psa_dynamic_dispatch(int cipher_type, int pre_psa_ret, int post_psa_engine)
 {
     mbedtls_block_cipher_context_t ctx;
+    (void) post_psa_engine;
 
     /* Intentionally no PSA init here! (Will be done later.) */