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-rw-r--r--engines/glk/alan3/syserr.h8
1 files changed, 4 insertions, 4 deletions
diff --git a/engines/glk/alan3/syserr.h b/engines/glk/alan3/syserr.h
index 84c2178ddb..3202600bd5 100644
--- a/engines/glk/alan3/syserr.h
+++ b/engines/glk/alan3/syserr.h
@@ -29,10 +29,10 @@ namespace Glk {
namespace Alan3 {
/* Functions: */
-extern void syserr(char *msg);
-extern void apperr(char *msg);
-extern void playererr(char *msg);
-extern void setSyserrHandler(void (*handler)(char *));
+extern void syserr(const char *msg);
+extern void apperr(const char *msg);
+extern void playererr(const char *msg);
+extern void setSyserrHandler(void (*handler)(const char *));
} // End of namespace Alan3
} // End of namespace Glk