diff --git a/modules/cfe_testcase/src/es_task_test.c b/modules/cfe_testcase/src/es_task_test.c
index cad3312f0..142585cbf 100644
--- a/modules/cfe_testcase/src/es_task_test.c
+++ b/modules/cfe_testcase/src/es_task_test.c
@@ -353,5 +353,12 @@ void ESTaskTestSetup(void)
     UtTest_Add(TestChildTaskName, NULL, NULL, "Test Child Task Name");
     UtTest_Add(TestChildTaskDelete, NULL, NULL, "Test Child Tasks Delete");
     UtTest_Add(TestExitChild, NULL, NULL, "Test Exit Child");
+
+    /*
+     * NOTE: The custom stack does not work on RTEMS, test is disabled on that platform
+     * for the time being (custom stack may be deprecated in future CFE release).
+     */
+#ifndef _RTEMS_OS_
     UtTest_Add(TestCreateChildWithStack, NULL, NULL, "Test Child with Custom Stack");
+#endif
 }