diff --git a/c/src/tests/tmtests/tm29/system.h b/c/src/tests/tmtests/tm29/system.h
index 2a667eebb0..90c664f348 100644
--- a/c/src/tests/tmtests/tm29/system.h
+++ b/c/src/tests/tmtests/tm29/system.h
@@ -36,6 +36,7 @@ rtems_task Init(
 #define CONFIGURE_TICKS_PER_TIMESLICE        0
  
 #define CONFIGURE_RTEMS_INIT_TASKS_TABLE
+#define CONFIGURE_INIT_TASK_STACK_SIZE    (RTEMS_MINIMUM_STACK_SIZE * 2)
 
 #include <confdefs.h>
 
diff --git a/testsuites/tmtests/tm29/system.h b/testsuites/tmtests/tm29/system.h
index 2a667eebb0..90c664f348 100644
--- a/testsuites/tmtests/tm29/system.h
+++ b/testsuites/tmtests/tm29/system.h
@@ -36,6 +36,7 @@ rtems_task Init(
 #define CONFIGURE_TICKS_PER_TIMESLICE        0
  
 #define CONFIGURE_RTEMS_INIT_TASKS_TABLE
+#define CONFIGURE_INIT_TASK_STACK_SIZE    (RTEMS_MINIMUM_STACK_SIZE * 2)
 
 #include <confdefs.h>