diff --git a/fsw/pc-rtems/src/cfe_psp_start.c b/fsw/pc-rtems/src/cfe_psp_start.c
index cbb9fc5c..369cb671 100644
--- a/fsw/pc-rtems/src/cfe_psp_start.c
+++ b/fsw/pc-rtems/src/cfe_psp_start.c
@@ -24,7 +24,6 @@
 **
 **
 ******************************************************************************/
-#define _USING_RTEMS_INCLUDES_
 
 /*
 **  Include Files