diff --git a/tests/suites/test_suite_mpi.function b/tests/suites/test_suite_mpi.function
index a82bf81..ddab63e 100644
--- a/tests/suites/test_suite_mpi.function
+++ b/tests/suites/test_suite_mpi.function
@@ -219,9 +219,10 @@
     TEST_INVALID_PARAM_RET( MBEDTLS_ERR_MPI_BAD_INPUT_DATA,
                             mbedtls_mpi_inv_mod( NULL, &X, &X ) );
 
+    mbedtls_mpi_free( NULL );
+
 exit:
     return;
-
 }
 /* END_CASE */