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-rw-r--r--src/algebra/strap/CHAR.lsp3
1 files changed, 1 insertions, 2 deletions
diff --git a/src/algebra/strap/CHAR.lsp b/src/algebra/strap/CHAR.lsp
index 7bd2bfbe..317ee9de 100644
--- a/src/algebra/strap/CHAR.lsp
+++ b/src/algebra/strap/CHAR.lsp
@@ -127,8 +127,7 @@
(RETURN
(CODE-CHAR
(PROG1 (LETT #0# (- |n| 1) |CHAR;index;Pi$;7|)
- (|check-subtype| (NOT (< #0# 0)) '(|NonNegativeInteger|)
- #0#))))))
+ (|check-subtype| (>= #0# 0) '(|NonNegativeInteger|) #0#))))))
(DEFUN |CHAR;lookup;$Pi;8| (|c| $)
(PROG (#0=#:G1407)