diff --git a/tests/suites/test_suite_ecp.function b/tests/suites/test_suite_ecp.function
index ae966a2..0f3e913 100644
--- a/tests/suites/test_suite_ecp.function
+++ b/tests/suites/test_suite_ecp.function
@@ -16,6 +16,44 @@
     mbedtls_ecp_point_free( x );    \
     mbedtls_ecp_point_init( x );
 
+/* Auxiliary function to compare two mbedtls_ecp_group objects. */
+inline static int mbedtls_ecp_group_cmp( mbedtls_ecp_group *grp1,
+                                         mbedtls_ecp_group *grp2 )
+{
+    if( mbedtls_mpi_cmp_mpi( &grp1->P, &grp2->P ) != 0 )
+        return 1;
+    if( mbedtls_mpi_cmp_mpi( &grp1->A, &grp2->A ) != 0 )
+        return 1;
+    if( mbedtls_mpi_cmp_mpi( &grp1->B, &grp2->B ) != 0 )
+        return 1;
+    if( mbedtls_mpi_cmp_mpi( &grp1->N, &grp2->N ) != 0 )
+        return 1;
+    if( mbedtls_ecp_point_cmp( &grp1->G, &grp2->G ) != 0 )
+        return 1;
+    if( grp1->id != grp2->id )
+        return 1;
+    if( grp1->pbits != grp2->pbits )
+        return 1;
+    if( grp1->nbits != grp2->nbits )
+        return 1;
+    if( grp1->h != grp2->h )
+        return 1;
+    if( grp1->modp != grp2->modp )
+        return 1;
+    if( grp1->t_pre != grp2->t_pre )
+        return 1;
+    if( grp1->t_post != grp2->t_post )
+        return 1;
+    if( grp1->t_data != grp2->t_data )
+        return 1;
+    if( grp1->T_size != grp2->T_size )
+        return 1;
+    if( grp1->T != grp2->T )
+        return 1;
+
+    return 0;
+}
+
 /* END_HEADER */
 
 /* BEGIN_DEPENDENCIES