diff --git a/c/src/lib/libbsp/powerpc/acinclude.m4 b/c/src/lib/libbsp/powerpc/acinclude.m4
index 434d25b4da..e3e9fecc16 100644
--- a/c/src/lib/libbsp/powerpc/acinclude.m4
+++ b/c/src/lib/libbsp/powerpc/acinclude.m4
@@ -4,14 +4,10 @@ AC_DEFUN([RTEMS_CHECK_BSPDIR],
   case "$1" in
   ep1a )
     AC_CONFIG_SUBDIRS([ep1a]);;
-  gen405 )
-    AC_CONFIG_SUBDIRS([gen405]);;
   gen5200 )
     AC_CONFIG_SUBDIRS([gen5200]);;
   gen83xx )
     AC_CONFIG_SUBDIRS([gen83xx]);;
-  helas403 )
-    AC_CONFIG_SUBDIRS([helas403]);;
   mbx8xx )
     AC_CONFIG_SUBDIRS([mbx8xx]);;
   motorola_powerpc )