diff --git a/src/xz/util.c b/src/xz/util.c
index 06b774d0..b9386c03 100644
--- a/src/xz/util.c
+++ b/src/xz/util.c
@@ -154,7 +154,7 @@ str_to_uint64(const char *name, const char *value, uint64_t min, uint64_t max)
 
 		if (multiplier == 0) {
 			message(V_ERROR, _("%s: Invalid multiplier suffix"),
-					value - 1);
+					tuklib_mask_nonprint(value - 1));
 			message_fatal(_("Valid suffixes are 'KiB' (2^10), "
 					"'MiB' (2^20), and 'GiB' (2^30)."));
 		}