diff --git a/src/EventEdit.tsx b/src/EventEdit.tsx
index 2a035c3..c01a907 100644
--- a/src/EventEdit.tsx
+++ b/src/EventEdit.tsx
@@ -30,7 +30,7 @@ class EventEdit extends React.Component {
     collections: Array<EteSync.CollectionInfo>,
     initialCollection?: string,
     event?: EventType,
-    onSave: (event: EventType, journalUid: string) => void;
+    onSave: (event: EventType, journalUid: string, originalEvent?: EventType) => void;
   };
 
   constructor(props: any) {
@@ -108,7 +108,7 @@ class EventEdit extends React.Component {
     event.location = this.state.location;
     event.description = this.state.description;
 
-    this.props.onSave(event, this.state.journalUid);
+    this.props.onSave(event, this.state.journalUid, this.props.event);
   }
 
   render() {
diff --git a/src/Pim.tsx b/src/Pim.tsx
index c66f420..378a89d 100644
--- a/src/Pim.tsx
+++ b/src/Pim.tsx
@@ -40,7 +40,7 @@ class Pim extends React.Component {
     this.onEventSave = this.onEventSave.bind(this);
   }
 
-  onEventSave(event: EventType, journalUid: string) {
+  onEventSave(event: EventType, journalUid: string, originalEvent?: EventType) {
     const journal = this.props.journals.find((x) => (x.uid === journalUid));
 
     if (journal === undefined) {
@@ -53,7 +53,9 @@ class Pim extends React.Component {
       return;
     }
 
-    let saveEvent = store.dispatch(createJournalEntry(this.props.etesync, journal, entries.value, event.toIcal()));
+    let action = (originalEvent === undefined) ? EteSync.SyncEntryAction.Add : EteSync.SyncEntryAction.Change;
+    let saveEvent = store.dispatch(
+      createJournalEntry(this.props.etesync, journal, entries.value, action, event.toIcal()));
     (saveEvent as any).then(() => {
       this.props.history.goBack();
     });
diff --git a/src/etesync-helpers.tsx b/src/etesync-helpers.tsx
index 0adc878..17384ac 100644
--- a/src/etesync-helpers.tsx
+++ b/src/etesync-helpers.tsx
@@ -6,10 +6,11 @@ export function createJournalEntry(
   etesync: CredentialsData,
   journal: EteSync.Journal,
   existingEntries: Array<EteSync.Entry>,
+  action: EteSync.SyncEntryAction,
   content: string) {
 
   let syncEntry = new EteSync.SyncEntry();
-  syncEntry.action = EteSync.SyncEntryAction.Add;
+  syncEntry.action = action;
 
   syncEntry.content = content;