diff --git a/zdump/opts.c b/zdump/opts.c
index b82ab236..022eedf5 100644
--- a/zdump/opts.c
+++ b/zdump/opts.c
@@ -101,7 +101,7 @@ static void init_defaults(struct options *opts)
 /*
  * Print "help" hint
  */
-static void __noreturn print_usage_exit(const char *prog_name)
+void __noreturn print_usage_exit(const char *prog_name)
 {
 	STDERR("Try '%s --help' for more information.\n", prog_name);
 	zg_exit(1);
diff --git a/zdump/opts.h b/zdump/opts.h
index 39f1043f..436967b9 100644
--- a/zdump/opts.h
+++ b/zdump/opts.h
@@ -36,5 +36,6 @@ extern const char *OPTS_SELECT_PROD;
 extern const char *OPTS_SELECT_ALL;
 
 void opts_parse(int argc, char *argv[], struct options *opts);
+void __noreturn print_usage_exit(const char *prog_name);
 
 #endif /* OPTS_H */