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-rw-r--r--engines/glk/alan3/utils.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/engines/glk/alan3/utils.h b/engines/glk/alan3/utils.h
index 1a6d470504..f103436e86 100644
--- a/engines/glk/alan3/utils.h
+++ b/engines/glk/alan3/utils.h
@@ -32,9 +32,9 @@ namespace Alan3 {
/* FUNCTIONS: */
extern void terminate(int code);
-extern void usage(char *programName);
+extern void usage(const char *programName);
extern void printVersion(int buildNumber);
-extern bool match(char *pattern, char *input);
+extern bool match(const char *pattern, char *input);
} // End of namespace Alan3
} // End of namespace Glk