diff --git a/rxandroidble/src/main/java/com/polidea/rxandroidble/exceptions/BleScanException.java b/rxandroidble/src/main/java/com/polidea/rxandroidble/exceptions/BleScanException.java
index dbc4e36b8..baf4960f6 100644
--- a/rxandroidble/src/main/java/com/polidea/rxandroidble/exceptions/BleScanException.java
+++ b/rxandroidble/src/main/java/com/polidea/rxandroidble/exceptions/BleScanException.java
@@ -84,7 +84,8 @@ private String reasonDescription() {
                 return "LOCATION_PERMISSION_MISSING";
             case LOCATION_SERVICES_DISABLED:
                 return "LOCATION_SERVICES_DISABLED";
+            default:
+                return "UNKNOWN";
         }
-        return "UNKNOWN";
     }
 }