X-Git-Url: https://git.exim.org/exim.git/blobdiff_plain/7be682ca5ebd9571a01b762195b11c34cd231830..3f0945ffae8acee547d11ae53d38fbdf9a2cc81f:/src/src/local_scan.h

diff --git a/src/src/local_scan.h b/src/src/local_scan.h
index 25b194407..aedfc9f92 100644
--- a/src/src/local_scan.h
+++ b/src/src/local_scan.h
@@ -186,7 +186,7 @@ extern uschar *rfc2047_decode(uschar *, BOOL, uschar *, int, int *, uschar **);
 extern int     smtp_fflush(void);
 extern void    smtp_printf(const char *, ...) PRINTF_FUNCTION(1,2);
 extern void    smtp_vprintf(const char *, va_list);
-extern uschar *string_copy(uschar *);
+extern uschar *string_copy(const uschar *);
 extern uschar *string_copyn(uschar *, int);
 extern uschar *string_sprintf(const char *, ...) PRINTF_FUNCTION(1,2);