diff --git a/src/config/options.c b/src/config/options.c
index 61c77b17..e542b8e1 100644
--- a/src/config/options.c
+++ b/src/config/options.c
@@ -473,7 +473,7 @@ init_option_listbox_item(struct option *option)
 struct option *
 add_opt(struct option *tree, unsigned char *path, unsigned char *capt,
 	unsigned char *name, enum option_flags flags, enum option_type type,
-	int min, int max, void *value, unsigned char *desc)
+	long min, long max, void *value, unsigned char *desc)
 {
 	struct option *option = mem_calloc(1, sizeof(*option));
 
diff --git a/src/config/options.h b/src/config/options.h
index 5bc1f499..6fd70982 100644
--- a/src/config/options.h
+++ b/src/config/options.h
@@ -253,7 +253,7 @@ extern union option_value *get_opt_(struct option *, unsigned char *);
 
 extern struct option *add_opt(struct option *, unsigned char *, unsigned char *,
 			      unsigned char *, enum option_flags, enum option_type,
-			      int, int, void *, unsigned char *);
+			      long, long, void *, unsigned char *);
 
 /* Hack which permit to disable option descriptions, to reduce elinks binary size.
  * It may of some use for people wanting a very small static non-i18n elinks binary,