diff --git a/Zotero/Scenes/Detail/HTML:EPUB/Views/HtmlEpubDocumentViewController.swift b/Zotero/Scenes/Detail/HTML:EPUB/Views/HtmlEpubDocumentViewController.swift
index 782545895..7b41d9216 100644
--- a/Zotero/Scenes/Detail/HTML:EPUB/Views/HtmlEpubDocumentViewController.swift
+++ b/Zotero/Scenes/Detail/HTML:EPUB/Views/HtmlEpubDocumentViewController.swift
@@ -80,10 +80,6 @@ class HtmlEpubDocumentViewController: UIViewController {
         }
     }
 
-    deinit {
-        viewModel.process(action: .deinitialiseReader)
-    }
-
     // MARK: - Actions
 
     private func process(state: HtmlEpubReaderState) {
diff --git a/Zotero/Scenes/Detail/HTML:EPUB/Views/HtmlEpubReaderViewController.swift b/Zotero/Scenes/Detail/HTML:EPUB/Views/HtmlEpubReaderViewController.swift
index 6646cbff9..7d11ad6c6 100644
--- a/Zotero/Scenes/Detail/HTML:EPUB/Views/HtmlEpubReaderViewController.swift
+++ b/Zotero/Scenes/Detail/HTML:EPUB/Views/HtmlEpubReaderViewController.swift
@@ -246,6 +246,7 @@ class HtmlEpubReaderViewController: UIViewController, ParentWithSidebarControlle
     }
 
     deinit {
+        viewModel.process(action: .deinitialiseReader)
         DDLogInfo("HtmlEpubReaderViewController deinitialized")
     }