diff --git a/src/time/strftime.c b/src/time/strftime.c
index 708875eeae52fc69be10418cd9fbdaa0e3e33a00..0a2569706db4ba73fe16fc3cdbb12d51c4751b8d 100644
--- a/src/time/strftime.c
+++ b/src/time/strftime.c
@@ -181,7 +181,7 @@ const char *__strftime_fmt_1(char (*s)[100], size_t *l, int f, const struct tm *
 			*l = 0;
 			return "";
 		}
-		*l = snprintf(*s, sizeof *s, "%+.2d%.2d",
+		*l = snprintf(*s, sizeof *s, "%+.2ld%.2d",
 			(tm->__tm_gmtoff)/3600,
 			abs(tm->__tm_gmtoff%3600)/60);
 		return *s;