diff --git a/debian/postinst b/debian/postinst
index f704125c..fc7b55df 100644
--- a/debian/postinst
+++ b/debian/postinst
@@ -3,7 +3,7 @@ set -e
 
 if [ "$1" = configure ]; then
 	if command -v setcap >/dev/null; then
-		if setcap cap_net_raw,cap_dac_read_search+ep /usr/bin/deepin-system-monitor; then
+		if setcap cap_net_raw+ep /usr/bin/deepin-system-monitor; then
 			chmod u-s /usr/bin/deepin-system-monitor
 		else
 			echo "Setcap failed, falling back to setuid" >&2