1 files changed, 1 insertions, 1 deletions

diff --git a/shell/ash.c b/shell/ash.c
index 8fb32c1ae..2ed802d2e 100644
--- a/shell/ash.c
+++ b/shell/ash.c
@@ -7192,7 +7192,7 @@ varvalue(char *name, int varflags, int flags, int *quotedp)
         case '-':
                 expdest = makestrspace(NOPTS, expdest);
                 for (i = NOPTS - 1; i >= 0; i--) {
-                        if (optlist[i]) {
+                        if (optlist[i] && optletters(i)) {
                                 USTPUTC(optletters(i), expdest);
                                 len++;
                         }