diff --git a/src/vstore/mount.c b/src/vstore/mount.c
index 1afc1acd..baa20aaf 100644
--- a/src/vstore/mount.c
+++ b/src/vstore/mount.c
@@ -1042,7 +1042,7 @@ int16_t corto_mount_resume(
                 } while (true);
             }
 
-            if (r) {
+            if (r && !(r->flags & CORTO_RESULT_HIDDEN) && strcmp(r->type, "unknown")) {
                 corto_object out = o;
                 int16_t resume_failed = corto_mount_resumeResult(
                     this, parent, id, r, &out);
diff --git a/test/vstore/model.corto b/test/vstore/model.corto
index 4ee91432..b2ee3a90 100644
--- a/test/vstore/model.corto
+++ b/test/vstore/model.corto
@@ -648,6 +648,8 @@ observer
     tc_resumeWithAutoFilter()
     tc_declareAndResume()
     tc_lookupAndResumeUnknown()
+    tc_defineUnknown()
+    tc_defineHidden()
 
 method
     setup()
diff --git a/test/vstore/src/HiddenParentMount.c b/test/vstore/src/HiddenParentMount.c
index c6653fd2..f71ff05e 100644
--- a/test/vstore/src/HiddenParentMount.c
+++ b/test/vstore/src/HiddenParentMount.c
@@ -13,7 +13,7 @@ int16_t test_HiddenParentMount_construct(
         "foo",
         NULL,
         ".",
-        "void",
+        "int32",
         0,
         CORTO_RESULT_HIDDEN
     );
@@ -28,6 +28,16 @@ int16_t test_HiddenParentMount_construct(
         CORTO_RESULT_LEAF
     );
 
+    corto_record__assign(
+        corto_recordList__append_alloc(this->items),
+        "helloworld",
+        NULL,
+        ".",
+        "unknown",
+        0,
+        CORTO_RESULT_LEAF
+    );
+
     return corto_super_construct(this);
 }
 
diff --git a/test/vstore/src/ResumeSink.c b/test/vstore/src/ResumeSink.c
index ae5f6e2f..09eb1210 100644
--- a/test/vstore/src/ResumeSink.c
+++ b/test/vstore/src/ResumeSink.c
@@ -2017,3 +2017,77 @@ void test_ResumeSink_tc_lookupAndResumeUnknown(
     test_assert(corto_delete(o) == 0);
     test_assert(corto_delete(m) == 0);
 }
+
+void test_ResumeSink_tc_defineHidden(
+    test_ResumeSink this)
+{
+    /* Create mount with a hidden object 'foo' */
+    corto_mount m = corto_subscribe("//")
+      .from("/data")
+      .mount(test_HiddenParentMount_o, "{ownership: LOCAL_SOURCE}");
+    test_assert(m != NULL);
+
+    corto_object o = corto(CORTO_DECLARE|CORTO_RECURSIVE_DECLARE|CORTO_RESUME, {
+        .parent = data_o, .id = "foo", .type = corto_int32_o});
+
+    test_assert(o != NULL);
+    test_assertstr(corto_idof(o), "foo");
+    test_assertref(corto_typeof(o), corto_int32_o);
+
+    /* Even though mount provides object, object should not be resumed because
+     * the object is HIDDEN */
+    test_assert(!corto_check_state(o, CORTO_VALID));
+    test_assert(!corto_isresumed(o));
+
+    test_assert(corto_delete(o) == 0);
+    test_assert(corto_delete(m) == 0);
+}
+
+static int defineUnknownCount = 0;
+
+void defineUnknownCallback(corto_subscriber_event *e) {
+    if (e->event == CORTO_DEFINE) {
+        defineUnknownCount ++;
+    }
+}
+
+void test_ResumeSink_tc_defineUnknown(
+    test_ResumeSink this)
+{
+    /* Create mount with a unknown object 'helloworld' */
+    corto_mount m = corto_subscribe("//")
+      .from("/data")
+      .mount(test_HiddenParentMount_o, "{ownership: LOCAL_SOURCE}");
+    test_assert(m != NULL);
+
+    /* Create subscriber that monitors DEFINE events */
+    corto_subscriber s = corto_subscribe("helloworld")
+      .from("data")
+      .callback(defineUnknownCallback);
+
+    test_assertint(defineUnknownCount, 0);
+
+    corto_object o = corto(CORTO_DECLARE|CORTO_RECURSIVE_DECLARE|CORTO_RESUME, {
+        .parent = data_o, .id = "helloworld", .type = corto_int32_o});
+
+    test_assert(o != NULL);
+    test_assertstr(corto_idof(o), "helloworld");
+    test_assertref(corto_typeof(o), corto_int32_o);
+
+    /* Even though mount provides object, object should not be resumed because
+     * the object is unknown */
+    test_assert(!corto_check_state(o, CORTO_VALID));
+    test_assert(!corto_isresumed(o));
+    test_assertint(defineUnknownCount, 0);
+
+    /* Create object the normal way */
+    corto_object p = corto_create(data_o, "helloworld", corto_int32_o);
+    test_assert(o == p);
+    test_assert(corto_check_state(p, CORTO_VALID));
+    test_assertint(defineUnknownCount, 1);
+
+    test_assert(corto_release(p) == 1);
+    test_assert(corto_delete(o) == 0);
+    test_assert(corto_delete(m) == 0);
+    test_assert(corto_delete(s) == 0);
+}
diff --git a/test/vstore/src/SelectMount.c b/test/vstore/src/SelectMount.c
index a8662cbe..aa2fef1c 100644
--- a/test/vstore/src/SelectMount.c
+++ b/test/vstore/src/SelectMount.c
@@ -1652,6 +1652,13 @@ void test_SelectMount_tc_selectRecursiveFromMountPointParent(
     test_assertstr(r->parent, "foo");
     test_assertstr(r->type, "void");
 
+    test_assert(corto_iter_hasNext(&it) != 0);
+    r = corto_iter_next(&it);
+    test_assert(r != NULL);
+    test_assertstr(r->id, "helloworld");
+    test_assertstr(r->parent, ".");
+    test_assertstr(r->type, "unknown");
+
     test_assert(corto_iter_hasNext(&it) == 0);
     test_assertint(m->on_query_count, 2);