diff --git a/app/src/main/java/eu/kanade/tachiyomi/data/download/DownloadProvider.kt b/app/src/main/java/eu/kanade/tachiyomi/data/download/DownloadProvider.kt
index b99d84f1d..bc2dd6398 100755
--- a/app/src/main/java/eu/kanade/tachiyomi/data/download/DownloadProvider.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/data/download/DownloadProvider.kt
@@ -139,7 +139,7 @@ class DownloadProvider(private val context: Context) {
      * @param source the source to query.
      */
     fun getSourceDirName(source: Source): String {
-        return source.toString()
+        return DiskUtil.buildValidFilename(source.toString())
     }
 
     /**