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-rw-r--r--src/coding.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/coding.h b/src/coding.h
index 156ead91ed2..75ed84bef71 100644
--- a/src/coding.h
+++ b/src/coding.h
@@ -753,7 +753,7 @@ extern void encode_coding_object (struct coding_system *,
} while (0)
-extern Lisp_Object preferred_coding_system ();
+extern Lisp_Object preferred_coding_system (void);
extern Lisp_Object Qutf_8, Qutf_8_emacs;