diff --git a/tests/src/psa_exercise_key.c b/tests/src/psa_exercise_key.c
index c1e76c85e..71a1b7874 100644
--- a/tests/src/psa_exercise_key.c
+++ b/tests/src/psa_exercise_key.c
@@ -764,6 +764,7 @@ int mbedtls_test_psa_exported_key_sanity_check(
 #endif /* MBEDTLS_ECP_C */
 
     {
+        (void) exported;
         TEST_ASSERT( ! "Sanity check not implemented for this key type" );
     }