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-rw-r--r--Src/options.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/Src/options.c b/Src/options.c
index d6aa3c850..80e05b343 100644
--- a/Src/options.c
+++ b/Src/options.c
@@ -198,7 +198,7 @@ static struct optname optns[] = {
{{NULL, "promptcr", OPT_ALL}, PROMPTCR},
{{NULL, "promptpercent", OPT_NONBOURNE}, PROMPTPERCENT},
{{NULL, "promptsp", OPT_ALL}, PROMPTSP},
-{{NULL, "promptsubst", OPT_KSH}, PROMPTSUBST},
+{{NULL, "promptsubst", OPT_BOURNE}, PROMPTSUBST},
{{NULL, "pushdignoredups", OPT_EMULATE}, PUSHDIGNOREDUPS},
{{NULL, "pushdminus", OPT_EMULATE}, PUSHDMINUS},
{{NULL, "pushdsilent", 0}, PUSHDSILENT},