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-rw-r--r--lisp/progmodes/prolog.el2
1 files changed, 1 insertions, 1 deletions
diff --git a/lisp/progmodes/prolog.el b/lisp/progmodes/prolog.el
index a82fd388031..124f652ed69 100644
--- a/lisp/progmodes/prolog.el
+++ b/lisp/progmodes/prolog.el
@@ -1997,7 +1997,7 @@ Argument BOUND is a buffer position limiting searching."
(if (eq prolog-system 'mercury)
(list
(regexp-opt prolog-directives-i 'words)
- 0 prolog-warning-face)))
+ 0 'prolog-warning-face)))
;; Inferior mode specific patterns
(prompt
;; FIXME: Should be handled by comint already.