diff --git a/html.h b/html.h
index c490655..2a9a431 100644
--- a/html.h
+++ b/html.h
@@ -8,6 +8,8 @@
#include
#endif /* USE_SSL */
+#include
+
#define StrUFgets(f) StrISgets((f)->stream)
#define StrmyUFgets(f) StrmyISgets((f)->stream)
#define UFgetc(f) ISgetc((f)->stream)