diff --git a/lib/libpam/libpam/security/_pam_aconf.h b/lib/libpam/libpam/security/_pam_aconf.h
index e359ffb09b49..10e93c6a23d0 100644
--- a/lib/libpam/libpam/security/_pam_aconf.h
+++ b/lib/libpam/libpam/security/_pam_aconf.h
@@ -54,7 +54,7 @@
 /* #undef UGLY_HACK_FOR_PRIOR_BEHAVIOR_SUPPORT */
 
 /* read both confs - read /etc/pam.d and /etc/pam.conf in serial */
-#define PAM_READ_BOTH_CONFS 1
+/* #undef PAM_READ_BOTH_CONFS */
 
 #define HAVE_PATHS_H 1
 #ifdef HAVE_PATHS_H