diff --git a/bundles/org.openhab.binding.mqtt.homeassistant/src/main/java/org/openhab/binding/mqtt/homeassistant/internal/config/dto/AbstractChannelConfiguration.java b/bundles/org.openhab.binding.mqtt.homeassistant/src/main/java/org/openhab/binding/mqtt/homeassistant/internal/config/dto/AbstractChannelConfiguration.java
index 6d606d9777eb1..7880b2cf43302 100644
--- a/bundles/org.openhab.binding.mqtt.homeassistant/src/main/java/org/openhab/binding/mqtt/homeassistant/internal/config/dto/AbstractChannelConfiguration.java
+++ b/bundles/org.openhab.binding.mqtt.homeassistant/src/main/java/org/openhab/binding/mqtt/homeassistant/internal/config/dto/AbstractChannelConfiguration.java
@@ -226,7 +226,7 @@ public static <C extends AbstractChannelConfiguration> C fromString(final String
             }
             return config;
         } catch (JsonSyntaxException e) {
-            throw new ConfigurationException("Cannot parse channel configuration JSON", e);
+            throw new ConfigurationException("Cannot parse channel configuration JSON: " + e.getMessage(), e);
         }
     }
 }