diff --git a/datatypes-examples.xml b/datatypes-examples.xml
index 9887d43..84a1bc1 100644
--- a/datatypes-examples.xml
+++ b/datatypes-examples.xml
@@ -392,7 +392,7 @@
 </residence>
 
 <share-documents-request xmlns="http://api.digipost.no/schema/datatypes">
-    <max-share-duration>PT2160H</max-share-duration>
+    <max-share-duration-seconds>1209600</max-share-duration-seconds>
     <purpose>We require to see your latest pay slip in order to grant you a loan.</purpose>
 </share-documents-request>
 
diff --git a/datatypes.xsd b/datatypes.xsd
index b18e3de..fed70bb 100644
--- a/datatypes.xsd
+++ b/datatypes.xsd
@@ -486,7 +486,7 @@
 
   <xs:complexType final="extension restriction" name="shareDocumentsRequest">
     <xs:sequence>
-      <xs:element name="max-share-duration" type="xs:string"/>
+      <xs:element name="max-share-duration-seconds" type="xs:long"/>
       <xs:element name="purpose" type="xs:string"/>
     </xs:sequence>
   </xs:complexType>
diff --git a/readme.md b/readme.md
index 98f8a8c..69322fb 100644
--- a/readme.md
+++ b/readme.md
@@ -1090,14 +1090,14 @@ A request for a user to share one or more documents
 
 |Name|Type|Required|Description|
 |----|----|--------|-----------|
-|maxShareDuration|Duration|yes|This is the maximum duration in which you are allowed to access the user's documents from they are shared with you|
+|maxShareDurationSeconds|Long|yes|This is the maximum duration in which you are allowed to access the user's documents from they are shared with you|
 |purpose|String|yes|This text should explain why you need to process the recipient's documents in a short and understandable way.|
 
 ### XML
 
 ```xml
 <share-documents-request xmlns="http://api.digipost.no/schema/datatypes">
-    <max-share-duration>PT2160H</max-share-duration>
+    <max-share-duration-seconds>1209600</max-share-duration-seconds>
     <purpose>We require to see your latest pay slip in order to grant you a loan.</purpose>
 </share-documents-request>
 ```
diff --git a/src/main/java/no/digipost/api/datatypes/marshalling/DurationXmlAdapter.java b/src/main/java/no/digipost/api/datatypes/marshalling/DurationXmlAdapter.java
deleted file mode 100644
index a1f3cd4..0000000
--- a/src/main/java/no/digipost/api/datatypes/marshalling/DurationXmlAdapter.java
+++ /dev/null
@@ -1,24 +0,0 @@
-package no.digipost.api.datatypes.marshalling;
-
-import javax.xml.bind.annotation.adapters.XmlAdapter;
-import java.time.Duration;
-
-public class DurationXmlAdapter extends XmlAdapter<String, Duration> {
-
-
-    @Override
-    public Duration unmarshal(String s) {
-        if (s == null) {
-            return null;
-        }
-        return Duration.parse(s);
-    }
-
-    @Override
-    public String marshal(Duration duration) {
-        if (duration == null) {
-            return null;
-        }
-        return duration.toString();
-    }
-}
diff --git a/src/main/java/no/digipost/api/datatypes/types/share/ShareDocumentsRequest.java b/src/main/java/no/digipost/api/datatypes/types/share/ShareDocumentsRequest.java
index 640aa74..f593b15 100644
--- a/src/main/java/no/digipost/api/datatypes/types/share/ShareDocumentsRequest.java
+++ b/src/main/java/no/digipost/api/datatypes/types/share/ShareDocumentsRequest.java
@@ -11,7 +11,6 @@
 import javax.validation.constraints.NotNull;
 import javax.xml.bind.annotation.XmlElement;
 import javax.xml.bind.annotation.XmlRootElement;
-import java.time.Duration;
 
 @XmlRootElement(name = "share-documents-request")
 @Value
@@ -21,10 +20,10 @@
 @Description("A request for a user to share one or more documents")
 public class ShareDocumentsRequest implements DataType {
 
-    @XmlElement(name="max-share-duration", required = true)
+    @XmlElement(name="max-share-duration-seconds", required = true)
     @NotNull
     @Description("This is the maximum duration in which you are allowed to access the user's documents from they are shared with you")
-    Duration maxShareDuration;
+    Long maxShareDurationSeconds;
 
     @XmlElement(name="purpose", required = true)
     @NotNull
@@ -32,7 +31,7 @@ public class ShareDocumentsRequest implements DataType {
     String purpose;
 
     public static final ShareDocumentsRequest EXAMPLE = new ShareDocumentsRequest(
-            Duration.ofDays(90),
+            14 * 24 * 60 * 60L,
             "We require to see your latest pay slip in order to grant you a loan."
     );
 
diff --git a/src/main/java/no/digipost/api/datatypes/types/share/package-info.java b/src/main/java/no/digipost/api/datatypes/types/share/package-info.java
index 3320e59..0c5168d 100644
--- a/src/main/java/no/digipost/api/datatypes/types/share/package-info.java
+++ b/src/main/java/no/digipost/api/datatypes/types/share/package-info.java
@@ -2,14 +2,12 @@
 @XmlAccessorType(XmlAccessType.FIELD)
 @XmlJavaTypeAdapters({
         @XmlJavaTypeAdapter(ZonedDateTimeXmlAdapter.class),
-        @XmlJavaTypeAdapter(LocalDateTimeXmlAdapter.class),
-        @XmlJavaTypeAdapter(DurationXmlAdapter.class)
+        @XmlJavaTypeAdapter(LocalDateTimeXmlAdapter.class)
 })
 @DataTypePackage
 package no.digipost.api.datatypes.types.share;
 
 import no.digipost.api.datatypes.documentation.DataTypePackage;
-import no.digipost.api.datatypes.marshalling.DurationXmlAdapter;
 import no.digipost.api.datatypes.marshalling.LocalDateTimeXmlAdapter;
 import no.digipost.api.datatypes.marshalling.ZonedDateTimeXmlAdapter;