diff --git a/usr.bin/seq/seq.c b/usr.bin/seq/seq.c
index e7f9fbca991c..f94ca0051755 100644
--- a/usr.bin/seq/seq.c
+++ b/usr.bin/seq/seq.c
@@ -207,7 +207,8 @@ numeric(const char *s)
 			}
 			if (ISEXP((unsigned char)*s)) {
 				s++;
-				if (ISSIGN((unsigned char)*s)) {
+				if (ISSIGN((unsigned char)*s) ||
+				    isdigit((unsigned char)*s)) {
 					s++;
 					continue;
 				}