diff --git a/bundles/org.openhab.binding.shelly/src/main/java/org/openhab/binding/shelly/internal/api2/Shelly2ApiJsonDTO.java b/bundles/org.openhab.binding.shelly/src/main/java/org/openhab/binding/shelly/internal/api2/Shelly2ApiJsonDTO.java
index 80e6a6204b8..e85ad3e57be 100644
--- a/bundles/org.openhab.binding.shelly/src/main/java/org/openhab/binding/shelly/internal/api2/Shelly2ApiJsonDTO.java
+++ b/bundles/org.openhab.binding.shelly/src/main/java/org/openhab/binding/shelly/internal/api2/Shelly2ApiJsonDTO.java
@@ -865,7 +865,7 @@ public class Shelly2ApiJsonDTO {
         @SerializedName("timer_started_at")
         public Double timerStartetAt;
         @SerializedName("timer_duration")
-        public Integer timerDuration;
+        public Double timerDuration;
         public Double apower;
         public Double voltage;
         public Double current;