diff --git a/app/src/main/java/eu/kanade/tachiyomi/ui/reader/ReaderPresenter.kt b/app/src/main/java/eu/kanade/tachiyomi/ui/reader/ReaderPresenter.kt
index 9ca24db5a..8d21218ab 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/ui/reader/ReaderPresenter.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/ui/reader/ReaderPresenter.kt
@@ -709,7 +709,7 @@ class ReaderPresenter(
         // Pictures directory.
         val baseDir = getPicturesDir(context).absolutePath
         val destDir = if (preferences.folderPerManga()) {
-            File(baseDir + File.separator + manga.title)
+            File(baseDir + File.separator + DiskUtil.buildValidFilename(manga.title))
         } else {
             File(baseDir)
         }