diff --git a/c/src/tests/itrontests/itronhello/system.h b/c/src/tests/itrontests/itronhello/system.h
index 425c8f7e7a..3e90b30229 100644
--- a/c/src/tests/itrontests/itronhello/system.h
+++ b/c/src/tests/itrontests/itronhello/system.h
@@ -27,6 +27,8 @@ void ITRON_Init( void );
 
 #define CONFIGURE_ITRON_INIT_TASK_TABLE
 
+#define CONFIGURE_USE_MINIIMFS_AS_BASE_FILESYSTEM
+
 #include <confdefs.h>
 
 /* global variables */
diff --git a/testsuites/itrontests/itronhello/system.h b/testsuites/itrontests/itronhello/system.h
index 425c8f7e7a..3e90b30229 100644
--- a/testsuites/itrontests/itronhello/system.h
+++ b/testsuites/itrontests/itronhello/system.h
@@ -27,6 +27,8 @@ void ITRON_Init( void );
 
 #define CONFIGURE_ITRON_INIT_TASK_TABLE
 
+#define CONFIGURE_USE_MINIIMFS_AS_BASE_FILESYSTEM
+
 #include <confdefs.h>
 
 /* global variables */