diff --git a/target/linux/generic-2.6/config-2.6.23 b/target/linux/generic-2.6/config-2.6.23
index b70d9a4549..ce555f2026 100644
--- a/target/linux/generic-2.6/config-2.6.23
+++ b/target/linux/generic-2.6/config-2.6.23
@@ -1041,6 +1041,7 @@ CONFIG_PPP_FILTER=y
 CONFIG_PPP_MPPE=m
 CONFIG_PPP_MULTILINK=y
 CONFIG_PPP_SYNC_TTY=m
+# CONFIG_PPS is not set
 # CONFIG_PREEMPT is not set
 CONFIG_PREEMPT_NONE=y
 # CONFIG_PREEMPT_VOLUNTARY is not set