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-rw-r--r--src/casetab.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/src/casetab.c b/src/casetab.c
index 34a81dc9b06..25aac5eca09 100644
--- a/src/casetab.c
+++ b/src/casetab.c
@@ -41,8 +41,7 @@ See `set-case-table' for more information on these data structures.")
canon = Fcar_safe (Fcdr_safe (Fcdr_safe (table)));
eqv = Fcar_safe (Fcdr_safe (Fcdr_safe (Fcdr_safe (table))));
-#define STRING256_P(obj) \
- (XTYPE (obj) == Lisp_String && XSTRING (obj)->size == 256)
+#define STRING256_P(obj) (STRINGP (obj) && XSTRING (obj)->size == 256)
return (STRING256_P (down)
&& (NILP (up) || STRING256_P (up))