diff --git a/src/Trigger.cc b/src/Trigger.cc
index 26f80c73d9..164f11b885 100644
--- a/src/Trigger.cc
+++ b/src/Trigger.cc
@@ -410,7 +410,7 @@ Val* Trigger::Lookup(const CallExpr* expr)
 	return (i != cache.end()) ? i->second : 0;
 	}
 
-const char* Trigger::Name()
+const char* Trigger::Name() const
 	{
 	assert(location);
 	return fmt("%s:%d-%d", location->filename,
diff --git a/src/Trigger.h b/src/Trigger.h
index ffec50d7ef..8e04fb9189 100644
--- a/src/Trigger.h
+++ b/src/Trigger.h
@@ -60,7 +60,7 @@ public:
 	virtual void Access(Val* val, const StateAccess& sa)
 		{ QueueTrigger(this); }
 
-	virtual const char* Name();
+	virtual const char* Name() const;
 
 	static void QueueTrigger(Trigger* trigger);