diff --git a/src/main/java/com/kiisoo/ic/customer/CustomerService.java b/src/main/java/com/kiisoo/ic/customer/CustomerService.java
index bf7b546..242204b 100644
--- a/src/main/java/com/kiisoo/ic/customer/CustomerService.java
+++ b/src/main/java/com/kiisoo/ic/customer/CustomerService.java
@@ -264,7 +264,7 @@ public class CustomerService {
                         }
                     }
                 } else {
-                    return null;
+                    returnValue = null;
                 }
             }
         }