diff --git a/plugins-root/check_icmp.c b/plugins-root/check_icmp.c
index d7e6ca2c..e6d43169 100644
--- a/plugins-root/check_icmp.c
+++ b/plugins-root/check_icmp.c
@@ -845,7 +845,7 @@ int main(int argc, char **argv) {
 	return (0);
 }
 
-static void run_checks() {
+static void run_checks(void) {
 	u_int i, t;
 	u_int final_wait, time_passed;