diff --git a/src/strtonum.c b/src/strtonum.c
index 8d6faa1..f85f741 100644
--- a/src/strtonum.c
+++ b/src/strtonum.c
@@ -58,6 +58,7 @@ strtonum(const char *nptr, long long minval, long long maxval,
 		return rv;
 	case ECANCELED:
 	case ENOTSUP:
+	case EINVAL:
 		goto out;
 	case ERANGE:
 		if (*eptr)