diff --git a/c/src/lib/libcpu/powerpc/configure.ac b/c/src/lib/libcpu/powerpc/configure.ac
index bb60e40dfd..83649c3837 100644
--- a/c/src/lib/libcpu/powerpc/configure.ac
+++ b/c/src/lib/libcpu/powerpc/configure.ac
@@ -76,8 +76,6 @@ AM_CONDITIONAL([AMPOLISH3],[test x"$USE_MAINTAINER_MODE" = x"yes" \
 
 # Explicitly list all Makefiles here
 AC_CONFIG_FILES([Makefile
-mpc5xx/Makefile
-mpc505/Makefile
 mpc8xx/Makefile
 ppc403/Makefile
 mpc6xx/Makefile