1 files changed, 2 insertions, 2 deletions
diff --git a/src/util.h b/src/util.h
index f8bcc0192c..2c22720a6b 100644
--- a/src/util.h
+++ b/src/util.h
@@ -276,12 +276,12 @@ public:
     /**
      * Get the help string
      */
-    std::string GetHelpMessage();
+    std::string GetHelpMessage() const;
 
     /**
      * Check whether we know of this arg
      */
-    bool IsArgKnown(const std::string& key, std::string& error);
+    bool IsArgKnown(const std::string& key) const;
 };
 
 extern ArgsManager gArgs;