diff --git a/src/freedombone-utils-firewall b/src/freedombone-utils-firewall
index 6f788bb1231c1b2b75bf587fdddc0b906c9dc1a6..56460df744ed5a3cf9790d3c6a3a59dbc495a92e 100755
--- a/src/freedombone-utils-firewall
+++ b/src/freedombone-utils-firewall
@@ -304,6 +304,7 @@ function configure_internet_protocol {
     else
         sed -i 's|net.ipv4.tcp_timestamps.*|net.ipv4.tcp_timestamps=0|g' /etc/sysctl.conf
     fi
+    /sbin/sysctl -p
     mark_completed $FUNCNAME
 }