diff --git a/bundles/org.openhab.automation.jsscripting/src/main/java/org/openhab/automation/jsscripting/internal/OpenhabGraalJSScriptEngine.java b/bundles/org.openhab.automation.jsscripting/src/main/java/org/openhab/automation/jsscripting/internal/OpenhabGraalJSScriptEngine.java
index 1264e913123..04f4e6521c3 100644
--- a/bundles/org.openhab.automation.jsscripting/src/main/java/org/openhab/automation/jsscripting/internal/OpenhabGraalJSScriptEngine.java
+++ b/bundles/org.openhab.automation.jsscripting/src/main/java/org/openhab/automation/jsscripting/internal/OpenhabGraalJSScriptEngine.java
@@ -125,8 +125,8 @@ public class OpenhabGraalJSScriptEngine
                     v -> v.getMember("rawItem").as(Item.class), HostAccess.TargetMappingPrecedence.LOW)
 
             // Translate openhab-js Quantity to org.openhab.core.library.types.QuantityType
-            .targetTypeMapping(Value.class, QuantityType.class, v -> v.hasMember("raw") && v.hasMember("toUnit"),
-                    v -> v.getMember("raw").as(QuantityType.class), HostAccess.TargetMappingPrecedence.LOW)
+            .targetTypeMapping(Value.class, QuantityType.class, v -> v.hasMember("rawQtyType"),
+                    v -> v.getMember("rawQtyType").as(QuantityType.class), HostAccess.TargetMappingPrecedence.LOW)
             .build();
 
     /** {@link Lock} synchronization of multi-thread access */