diff --git a/IOT/docs/diagram/class.puml b/IOT/docs/diagram/class.puml
index 678c6f3..4073667 100644
--- a/IOT/docs/diagram/class.puml
+++ b/IOT/docs/diagram/class.puml
@@ -14,7 +14,7 @@ Class API {
 }
 
 Class Program {
-    + Program ()
+    + Program()
     + setup()
 }