diff --git a/framework/src/main/java/de/hsadmin/module/impl/AbstractProperty.java b/framework/src/main/java/de/hsadmin/module/impl/AbstractProperty.java
index d88ce10..a30dcf1 100644
--- a/framework/src/main/java/de/hsadmin/module/impl/AbstractProperty.java
+++ b/framework/src/main/java/de/hsadmin/module/impl/AbstractProperty.java
@@ -139,7 +139,11 @@ public abstract class AbstractProperty<T> implements Property<T> {
 
 	@Override
 	public void copyValueFromParameterMap(Map<String, Object> rpcParameter) throws TechnicalException, UserException {
-		setValue(getParameterMapMapper().readValueFromParameterMap(rpcParameter, getName(), owningVO.getType(getName())));
+		final String propName = getName();
+		final Class<?> propType = owningVO.getType(propName);
+		final ParameterMapMapper<T> paramMapMapper = getParameterMapMapper();
+		final T valueFromParameterMap = paramMapMapper.readValueFromParameterMap(rpcParameter, propName, propType);
+		setValue(valueFromParameterMap);
 	}
 
 	@Override