diff --git a/legacy/eobj/examples/composite_objects/comp.c b/legacy/eobj/examples/composite_objects/comp.c
index 8fbedd9f2f..a688d20409 100644
--- a/legacy/eobj/examples/composite_objects/comp.c
+++ b/legacy/eobj/examples/composite_objects/comp.c
@@ -2,6 +2,7 @@
 #include "simple.h"
 
 #include "comp.h"
+#include "../eunit_tests.h"
 
 EAPI Eobj_Op COMP_BASE_ID = 0;
 
@@ -25,6 +26,9 @@ _constructor(Eobj *obj)
    eobj_composite_object_attach(obj, simple);
    eobj_event_callback_forwarder_add(simple, SIG_A_CHANGED, obj);
 
+   fail_if(eobj_composite_is(obj));
+   fail_if(!eobj_composite_is(simple));
+
    eobj_unref(simple);
 }
 
diff --git a/legacy/eobj/tests/eobj_test_general.c b/legacy/eobj/tests/eobj_test_general.c
index 418e184290..2f89e29f4d 100644
--- a/legacy/eobj/tests/eobj_test_general.c
+++ b/legacy/eobj/tests/eobj_test_general.c
@@ -9,6 +9,16 @@
 
 #include "class_simple.h"
 
+START_TEST(eobj_simple)
+{
+   eobj_init();
+   Eobj *obj = eobj_add(EOBJ_CLASS_BASE, NULL);
+
+   fail_if(obj);
+   eobj_shutdown();
+}
+END_TEST
+
 START_TEST(eobj_op_errors)
 {
    eobj_init();
@@ -28,4 +38,5 @@ END_TEST
 void eobj_test_general(TCase *tc)
 {
    tcase_add_test(tc, eobj_op_errors);
+   tcase_add_test(tc, eobj_simple);
 }