diff --git a/tc/tc_common.h b/tc/tc_common.h
index 5bfc43e4..e01b0378 100644
--- a/tc/tc_common.h
+++ b/tc/tc_common.h
@@ -10,7 +10,7 @@ extern int do_tcmonitor(int argc, char **argv);
 extern int print_action(const struct sockaddr_nl *who, struct nlmsghdr *n, void *arg);
 extern int print_filter(const struct sockaddr_nl *who, struct nlmsghdr *n, void *arg);
 extern int print_qdisc(const struct sockaddr_nl *who, struct nlmsghdr *n, void *arg);
- extern int print_class(const struct sockaddr_nl *who, struct nlmsghdr *n, void *arg);
+extern int print_class(const struct sockaddr_nl *who, struct nlmsghdr *n, void *arg);
 
 struct tc_estimator;
 extern int parse_estimator(int *p_argc, char ***p_argv, struct tc_estimator *est);