1 files changed, 2 insertions, 1 deletions

diff --git a/src/firemon/usage.c b/src/firemon/usage.c
index 926e1c89f..74a2a61f0 100644
--- a/src/firemon/usage.c
+++ b/src/firemon/usage.c
@@ -24,7 +24,8 @@ void usage(void) {
         printf("Usage: firemon [OPTIONS] [PID]\n\n");
         printf("Monitor processes started in a Firejail sandbox. Without any PID specified,\n");
         printf("all processes started by Firejail are monitored. Descendants of these processes\n");
-        printf("are also being monitored.\n\n");
+        printf("are also being monitored. On Grsecurity systems only root user\n");
+        printf("can run this program.\n\n");
         printf("Options:\n");
         printf("\t--arp - print ARP table for each sandbox.\n\n");
         printf("\t--caps - print capabilities configuration for each sandbox.\n\n");