Make ECP error codes more specific
diff --git a/tests/suites/test_suite_ecp.function b/tests/suites/test_suite_ecp.function
index 5b1ab60..7201e74 100644
--- a/tests/suites/test_suite_ecp.function
+++ b/tests/suites/test_suite_ecp.function
@@ -478,10 +478,10 @@
     TEST_ASSERT( ecp_use_known_dp( &grp, id ) == 0 );
 
     TEST_ASSERT( mpi_lset( &d, 0 ) == 0 );
-    TEST_ASSERT( ecp_check_privkey( &grp, &d ) == POLARSSL_ERR_ECP_GENERIC );
+    TEST_ASSERT( ecp_check_privkey( &grp, &d ) == POLARSSL_ERR_ECP_INVALID_KEY );
 
     TEST_ASSERT( mpi_copy( &d, &grp.N ) == 0 );
-    TEST_ASSERT( ecp_check_privkey( &grp, &d ) == POLARSSL_ERR_ECP_GENERIC );
+    TEST_ASSERT( ecp_check_privkey( &grp, &d ) == POLARSSL_ERR_ECP_INVALID_KEY );
 
     ecp_group_free( &grp );
     mpi_free( &d );