diff --git a/pom.xml b/pom.xml
index 5c10238..dad4180 100755
--- a/pom.xml
+++ b/pom.xml
@@ -32,7 +32,7 @@
     </parent>
 
     <artifactId>oxalis-as4</artifactId>
-    <version>4.1.2</version>
+    <version>4.1.3</version>
 
     <packaging>jar</packaging>
 
diff --git a/src/main/java/no/difi/oxalis/as4/inbound/AbstractSetPolicyInterceptor.java b/src/main/java/no/difi/oxalis/as4/inbound/AbstractSetPolicyInterceptor.java
index 4471c6c..d568c8f 100644
--- a/src/main/java/no/difi/oxalis/as4/inbound/AbstractSetPolicyInterceptor.java
+++ b/src/main/java/no/difi/oxalis/as4/inbound/AbstractSetPolicyInterceptor.java
@@ -10,7 +10,6 @@
 import org.apache.cxf.interceptor.Fault;
 import org.apache.cxf.message.Message;
 import org.apache.cxf.ws.policy.PolicyConstants;
-import org.apache.cxf.ws.policy.PolicyInInterceptor;
 import org.apache.neethi.Policy;
 import org.oasis_open.docs.ebxml_msg.ebms.v3_0.ns.core._200704.Messaging;
 import org.oasis_open.docs.ebxml_msg.ebms.v3_0.ns.core._200704.UserMessage;
@@ -23,6 +22,8 @@
 import java.util.Optional;
 import java.util.stream.Stream;
 
+import static org.apache.cxf.ws.security.SecurityConstants.USE_ATTACHMENT_ENCRYPTION_CONTENT_ONLY_TRANSFORM;
+
 @Slf4j
 abstract class AbstractSetPolicyInterceptor extends AbstractSoapInterceptor {
 
@@ -36,6 +37,8 @@ public AbstractSetPolicyInterceptor(String phase, PolicyService policyService) {
 
     @Override
     public void handleMessage(SoapMessage message) throws Fault {
+        message.put(USE_ATTACHMENT_ENCRYPTION_CONTENT_ONLY_TRANSFORM, true);
+
         Optional<UserMessage> userMessage = getMessaging(message)
                 .map(Messaging::getUserMessage)
                 .map(Collection::stream).orElseGet(Stream::empty)
diff --git a/src/main/java/no/difi/oxalis/as4/inbound/SetPolicyOutInterceptor.java b/src/main/java/no/difi/oxalis/as4/inbound/SetPolicyOutInterceptor.java
index f8fae4f..0ca16a4 100644
--- a/src/main/java/no/difi/oxalis/as4/inbound/SetPolicyOutInterceptor.java
+++ b/src/main/java/no/difi/oxalis/as4/inbound/SetPolicyOutInterceptor.java
@@ -3,29 +3,9 @@
 import com.google.inject.Inject;
 import com.google.inject.Singleton;
 import lombok.extern.slf4j.Slf4j;
-import no.difi.oxalis.as4.util.Constants;
-import no.difi.oxalis.as4.util.Marshalling;
 import no.difi.oxalis.as4.util.PolicyService;
-import org.apache.cxf.binding.soap.SoapMessage;
-import org.apache.cxf.binding.soap.interceptor.AbstractSoapInterceptor;
-import org.apache.cxf.headers.Header;
-import org.apache.cxf.interceptor.Fault;
-import org.apache.cxf.message.Message;
 import org.apache.cxf.phase.Phase;
-import org.apache.cxf.ws.policy.PolicyConstants;
-import org.apache.cxf.ws.policy.PolicyInInterceptor;
 import org.apache.cxf.ws.policy.PolicyOutInterceptor;
-import org.apache.neethi.Policy;
-import org.oasis_open.docs.ebxml_msg.ebms.v3_0.ns.core._200704.Messaging;
-import org.oasis_open.docs.ebxml_msg.ebms.v3_0.ns.core._200704.UserMessage;
-import org.w3c.dom.Node;
-
-import javax.xml.bind.JAXBContext;
-import javax.xml.bind.JAXBException;
-import javax.xml.bind.Unmarshaller;
-import java.util.Collection;
-import java.util.Optional;
-import java.util.stream.Stream;
 
 @Slf4j
 @Singleton
diff --git a/src/main/java/no/difi/oxalis/as4/outbound/As4MessageSender.java b/src/main/java/no/difi/oxalis/as4/outbound/As4MessageSender.java
index dbc00b2..4aa84ff 100644
--- a/src/main/java/no/difi/oxalis/as4/outbound/As4MessageSender.java
+++ b/src/main/java/no/difi/oxalis/as4/outbound/As4MessageSender.java
@@ -41,6 +41,7 @@
 
 import static no.difi.oxalis.as4.common.AS4Constants.CEF_CONFORMANCE;
 import static org.apache.cxf.rt.security.SecurityConstants.*;
+import static org.apache.cxf.ws.security.SecurityConstants.USE_ATTACHMENT_ENCRYPTION_CONTENT_ONLY_TRANSFORM;
 
 @Slf4j
 public class As4MessageSender {
@@ -117,6 +118,7 @@ private void configureSecurity(TransmissionRequest request, Dispatch<SOAPMessage
         dispatch.getRequestContext().put(SIGNATURE_PASSWORD, settings.getString(KeyStoreConf.KEY_PASSWORD));
         dispatch.getRequestContext().put(SIGNATURE_USERNAME, settings.getString(KeyStoreConf.KEY_ALIAS));
         dispatch.getRequestContext().put(ENCRYPT_CERT, request.getEndpoint().getCertificate());
+        dispatch.getRequestContext().put(USE_ATTACHMENT_ENCRYPTION_CONTENT_ONLY_TRANSFORM, true);
     }
 
     public Collection<Attachment> prepareAttachments(TransmissionRequest request) throws OxalisAs4TransmissionException {