From b2db3095128412f4787fe0825ef66d38a550daae Mon Sep 17 00:00:00 2001
From: Cody Cutrer <cody@cutrer.us>
Date: Thu, 11 Apr 2024 13:54:49 -0600
Subject: [PATCH] [mqtt] fix UnDefType comparison in PercentageValue (#16639)

Signed-off-by: Cody Cutrer <cody@cutrer.us>
Signed-off-by: Ciprian Pascu <contact@ciprianpascu.ro>
---
 .../openhab/binding/mqtt/generic/values/PercentageValue.java    | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/bundles/org.openhab.binding.mqtt.generic/src/main/java/org/openhab/binding/mqtt/generic/values/PercentageValue.java b/bundles/org.openhab.binding.mqtt.generic/src/main/java/org/openhab/binding/mqtt/generic/values/PercentageValue.java
index 8bcd75526ed..00c4af0ad8e 100644
--- a/bundles/org.openhab.binding.mqtt.generic/src/main/java/org/openhab/binding/mqtt/generic/values/PercentageValue.java
+++ b/bundles/org.openhab.binding.mqtt.generic/src/main/java/org/openhab/binding/mqtt/generic/values/PercentageValue.java
@@ -73,7 +73,7 @@ public class PercentageValue extends Value {
 
     @Override
     public PercentType parseCommand(Command command) throws IllegalArgumentException {
-        PercentType oldvalue = (state == UnDefType.UNDEF) ? new PercentType() : (PercentType) state;
+        PercentType oldvalue = (state instanceof UnDefType) ? new PercentType() : (PercentType) state;
         // Nothing do to -> We have received a percentage
         if (command instanceof PercentType percent) {
             return percent;