diff --git a/libasn1fix/asn1fix_misc.c b/libasn1fix/asn1fix_misc.c
index 88e8d18..e5f4f79 100644
--- a/libasn1fix/asn1fix_misc.c
+++ b/libasn1fix/asn1fix_misc.c
@@ -50,8 +50,7 @@
 			memcpy(buf + sizeof(buf) - 4, "...", 4);
 		return buf;
 	case ATV_INTEGER:
-		ret = snprintf(buf, sizeof(buf), "%" PRIdASN,
-			v->value.v_integer);
+		ret = snprintf(buf, sizeof(buf), "%s", asn1p_itoa(v->value.v_integer));
 		if(ret >= (ssize_t)sizeof(buf))
 			memcpy(buf + sizeof(buf) - 4, "...", 4);
 		return buf;