diff --git a/networking/libiproute/utils.h b/networking/libiproute/utils.h
index af286c8..6763123 100644
--- a/networking/libiproute/utils.h
+++ b/networking/libiproute/utils.h
@@ -77,7 +77,7 @@
 extern const char *format_host(int af, int len, void *addr, char *buf, int buflen);
 extern const char *rt_addr_n2a(int af, int len, void *addr, char *buf, int buflen);
 
-void invarg(const char const*, const char const*) ATTRIBUTE_NORETURN;
+void invarg(const char * const, const char * const) ATTRIBUTE_NORETURN;
 void duparg(char *, char *) ATTRIBUTE_NORETURN;
 void duparg2(char *, char *) ATTRIBUTE_NORETURN;
 int matches(char *arg, char *pattern);