diff --git a/puml_generator.py b/puml_generator.py
index da7fb49..1a23c74 100644
--- a/puml_generator.py
+++ b/puml_generator.py
@@ -204,7 +204,8 @@ def gen_puml_code_from_class(java_class:JavaClass, no_pkgs:bool=False) -> str:
 
     for related_class, relation in uml_relations.items():
         if not related_class == "*":
-            puml_code += f"{class_package + "." + class_name} {relation}-- {related_class}\n"
+            cardinalities = ("1", "1")
+            puml_code += f"{class_package + "." + class_name} {"\"" + cardinalities[1] + "\""} {relation}-- {"\"" + cardinalities[0] + "\""} {related_class}\n"
 
 
     puml_code += "\n"