diff --git a/bundles/org.openhab.binding.evcc/src/main/java/org/openhab/binding/evcc/internal/handler/EvccSiteHandler.java b/bundles/org.openhab.binding.evcc/src/main/java/org/openhab/binding/evcc/internal/handler/EvccSiteHandler.java
index 01692f9a4a..0a6110d8da 100644
--- a/bundles/org.openhab.binding.evcc/src/main/java/org/openhab/binding/evcc/internal/handler/EvccSiteHandler.java
+++ b/bundles/org.openhab.binding.evcc/src/main/java/org/openhab/binding/evcc/internal/handler/EvccSiteHandler.java
@@ -83,7 +83,7 @@ public class EvccSiteHandler extends EvccBaseThingHandler {
             }
 
             // Set the smart cost type
-            if (state.has("smartCostType")) {
+            if (state.has("smartCostType") && !state.get("smartCostType").isJsonNull()) {
                 smartCostType = state.get("smartCostType").getAsString();
             }