Set selftest verbose flag to boost coverage
diff --git a/tests/suites/test_suite_dhm.function b/tests/suites/test_suite_dhm.function
index 002c20b..b9b8e19 100644
--- a/tests/suites/test_suite_dhm.function
+++ b/tests/suites/test_suite_dhm.function
@@ -123,6 +123,6 @@
 /* BEGIN_CASE depends_on:MBEDTLS_SELF_TEST */
 void dhm_selftest()
 {
-    TEST_ASSERT( mbedtls_dhm_self_test( 0 ) == 0 );
+    TEST_ASSERT( mbedtls_dhm_self_test( 1 ) == 0 );
 }
 /* END_CASE */