diff --git a/make/custom/simhppa.cfg b/make/custom/simhppa.cfg
index 1deb7b2714..fd9b739958 100644
--- a/make/custom/simhppa.cfg
+++ b/make/custom/simhppa.cfg
@@ -6,8 +6,7 @@
 
 include $(RTEMS_ROOT)/make/custom/default.cfg
 
-# this really should be hppa1.1 but you define that with cpp :(
-RTEMS_CPU=hppa1_1
+RTEMS_CPU=hppa1.1
 RTEMS_CPU_MODEL=hppa7200
 
 # This is the actual bsp directory used during the build process.