diff --git a/src/serverobject.h b/src/serverobject.h
index 42eed0710..08f7a7e58 100644
--- a/src/serverobject.h
+++ b/src/serverobject.h
@@ -147,7 +147,7 @@ public:
 
 	virtual void setArmorGroups(const ItemGroupList &armor_groups)
 	{}
-	virtual const ItemGroupList &getArmorGroups()
+	virtual const ItemGroupList &getArmorGroups() const
 	{ static ItemGroupList rv; return rv; }
 	virtual void setPhysicsOverride(float physics_override_speed, float physics_override_jump, float physics_override_gravity)
 	{}