diff --git a/configure.ac b/configure.ac
index 3a3e07b453..deb8384f5a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -571,7 +571,6 @@ case $host_cpu in
     ;;
 esac
 
-AC_SUBST([CFLAGS])
 AC_SUBST([ALTIVEC_CFLAGS])
 AC_SUBST([SSE3_CFLAGS])