diff --git a/src/annotator/annotation-sync.js b/src/annotator/annotation-sync.js
index a92bc45ce84..94a92dddc3a 100644
--- a/src/annotator/annotation-sync.js
+++ b/src/annotator/annotation-sync.js
@@ -79,7 +79,7 @@ export class AnnotationSync {
         return;
       }
       this.bridge.call(
-        guestToSidebarEvents.BEFORE_CREATE_ANNOTATION,
+        guestToSidebarEvents.CREATE_ANNOTATION,
         this._format(annotation)
       );
     });
diff --git a/src/annotator/test/annotation-sync-test.js b/src/annotator/test/annotation-sync-test.js
index af287e305c5..72bdf2613fc 100644
--- a/src/annotator/test/annotation-sync-test.js
+++ b/src/annotator/test/annotation-sync-test.js
@@ -123,7 +123,7 @@ describe('AnnotationSync', () => {
         assert.called(fakeBridge.call);
         assert.calledWith(
           fakeBridge.call,
-          guestToSidebarEvents.BEFORE_CREATE_ANNOTATION,
+          guestToSidebarEvents.CREATE_ANNOTATION,
           {
             msg: ann,
             tag: ann.$tag,
diff --git a/src/shared/bridge-events.js b/src/shared/bridge-events.js
index bd940cfcfaa..ae570bad538 100644
--- a/src/shared/bridge-events.js
+++ b/src/shared/bridge-events.js
@@ -29,14 +29,14 @@ export const hostToSidebarEvents = {
 /**
  * Events that the guest sends to the sidebar
  *
- * @typedef {'beforeCreateAnnotation'|'closeSidebar'|'focusAnnotations'|'openSidebar'|'showAnnotations'|'sync'|'toggleAnnotationSelection'} GuestToSidebarEvent
- * @type {Record<'BEFORE_CREATE_ANNOTATION'|'CLOSE_SIDEBAR'|'FOCUS_ANNOTATIONS'|'OPEN_SIDEBAR'|'SHOW_ANNOTATIONS'|'SYNC'|'TOGGLE_ANNOTATION_SELECTION', GuestToSidebarEvent>}
+ * @typedef {'createAnnotation'|'closeSidebar'|'focusAnnotations'|'openSidebar'|'showAnnotations'|'sync'|'toggleAnnotationSelection'} GuestToSidebarEvent
+ * @type {Record<'CREATE_ANNOTATION'|'CLOSE_SIDEBAR'|'FOCUS_ANNOTATIONS'|'OPEN_SIDEBAR'|'SHOW_ANNOTATIONS'|'SYNC'|'TOGGLE_ANNOTATION_SELECTION', GuestToSidebarEvent>}
  */
 export const guestToSidebarEvents = {
   /**
    * The guest is asking the sidebar to create an annotation.
    */
-  BEFORE_CREATE_ANNOTATION: 'beforeCreateAnnotation',
+  CREATE_ANNOTATION: 'createAnnotation',
 
   /**
    * The guest is asking the sidebar to relay the message to open the sidebar.
diff --git a/src/sidebar/services/frame-sync.js b/src/sidebar/services/frame-sync.js
index c7a0b4ed1cb..7c84a394f36 100644
--- a/src/sidebar/services/frame-sync.js
+++ b/src/sidebar/services/frame-sync.js
@@ -147,29 +147,26 @@ export class FrameSyncService {
      */
     this._setupSyncFromGuests = () => {
       // A new annotation, note or highlight was created in the frame
-      this._guestRPC.on(
-        guestToSidebarEvents.BEFORE_CREATE_ANNOTATION,
-        event => {
-          const annot = Object.assign({}, event.msg, { $tag: event.tag });
-          // If user is not logged in, we can't really create a meaningful highlight
-          // or annotation. Instead, we need to open the sidebar, show an error,
-          // and delete the (unsaved) annotation so it gets un-selected in the
-          // target document
-          if (!store.isLoggedIn()) {
-            this._hostRPC.call(sidebarToHostEvents.OPEN_SIDEBAR);
-            store.openSidebarPanel('loginPrompt');
-            this._guestRPC.call(
-              sidebarToGuestEvents.DELETE_ANNOTATION,
-              formatAnnot(annot)
-            );
-            return;
-          }
-          inFrame.add(event.tag);
-
-          // Create the new annotation in the sidebar.
-          annotationsService.create(annot);
+      this._guestRPC.on(guestToSidebarEvents.CREATE_ANNOTATION, event => {
+        const annot = Object.assign({}, event.msg, { $tag: event.tag });
+        // If user is not logged in, we can't really create a meaningful highlight
+        // or annotation. Instead, we need to open the sidebar, show an error,
+        // and delete the (unsaved) annotation so it gets un-selected in the
+        // target document
+        if (!store.isLoggedIn()) {
+          this._hostRPC.call(sidebarToHostEvents.OPEN_SIDEBAR);
+          store.openSidebarPanel('loginPrompt');
+          this._guestRPC.call(
+            sidebarToGuestEvents.DELETE_ANNOTATION,
+            formatAnnot(annot)
+          );
+          return;
         }
-      );
+        inFrame.add(event.tag);
+
+        // Create the new annotation in the sidebar.
+        annotationsService.create(annot);
+      });
 
       // Map of annotation tag to anchoring status
       // ('anchored'|'orphan'|'timeout').
diff --git a/src/sidebar/services/test/frame-sync-test.js b/src/sidebar/services/test/frame-sync-test.js
index 5241daa217d..f70dde3dc3b 100644
--- a/src/sidebar/services/test/frame-sync-test.js
+++ b/src/sidebar/services/test/frame-sync-test.js
@@ -328,7 +328,7 @@ describe('FrameSyncService', () => {
         fakeStore.isLoggedIn.returns(true);
         const ann = { target: [] };
 
-        guestBridge().emit(guestToSidebarEvents.BEFORE_CREATE_ANNOTATION, {
+        guestBridge().emit(guestToSidebarEvents.CREATE_ANNOTATION, {
           tag: 't1',
           msg: ann,
         });
@@ -352,7 +352,7 @@ describe('FrameSyncService', () => {
       it('should not create an annotation in the sidebar', () => {
         const ann = { target: [] };
 
-        guestBridge().emit(guestToSidebarEvents.BEFORE_CREATE_ANNOTATION, {
+        guestBridge().emit(guestToSidebarEvents.CREATE_ANNOTATION, {
           tag: 't1',
           msg: ann,
         });
@@ -362,7 +362,7 @@ describe('FrameSyncService', () => {
 
       it('should open the sidebar', () => {
         const ann = { target: [] };
-        guestBridge().emit(guestToSidebarEvents.BEFORE_CREATE_ANNOTATION, {
+        guestBridge().emit(guestToSidebarEvents.CREATE_ANNOTATION, {
           tag: 't1',
           msg: ann,
         });
@@ -372,7 +372,7 @@ describe('FrameSyncService', () => {
 
       it('should open the login prompt panel', () => {
         const ann = { target: [] };
-        guestBridge().emit(guestToSidebarEvents.BEFORE_CREATE_ANNOTATION, {
+        guestBridge().emit(guestToSidebarEvents.CREATE_ANNOTATION, {
           tag: 't1',
           msg: ann,
         });
@@ -382,7 +382,7 @@ describe('FrameSyncService', () => {
 
       it('should send a "deleteAnnotation" message to the frame', () => {
         const ann = { target: [] };
-        guestBridge().emit(guestToSidebarEvents.BEFORE_CREATE_ANNOTATION, {
+        guestBridge().emit(guestToSidebarEvents.CREATE_ANNOTATION, {
           tag: 't1',
           msg: ann,
         });