diff --git a/seq.c b/seq.c
index 917c89a..1b17a58 100644
--- a/seq.c
+++ b/seq.c
@@ -98,7 +98,7 @@ digitsleft(const char *d)
 	if (*d == '+')
 		d++;
 	exp = strpbrk(d, "eE");
-	shift = exp ? estrtonum(&exp[1], -INT_MAX, INT_MAX) : 0;
+	shift = exp ? estrtonum(&exp[1], INT_MIN, INT_MAX) : 0;
 
 	return MAX(0, strspn(d, "-0123456789") + shift);
 }