diff --git a/app/src/main/java/exh/GalleryAdder.kt b/app/src/main/java/exh/GalleryAdder.kt
index ff49aef22..454360bd0 100755
--- a/app/src/main/java/exh/GalleryAdder.kt
+++ b/app/src/main/java/exh/GalleryAdder.kt
@@ -63,7 +63,7 @@ class GalleryAdder {
             val source = if (forceSource != null) {
                 try {
                     if (forceSource.matchesUri(uri)) forceSource
-                    else return GalleryAddEvent.Fail.UnknownType(url, context)
+                    else return GalleryAddEvent.Fail.UnknownSource(url, context)
                 } catch (e: Exception) {
                     logger.e(context.getString(R.string.gallery_adder_source_uri_must_match), e)
                     return GalleryAddEvent.Fail.UnknownType(url, context)
@@ -78,7 +78,7 @@ class GalleryAdder {
                         } catch (e: Exception) {
                             false
                         }
-                    } ?: return GalleryAddEvent.Fail.UnknownType(url, context)
+                    } ?: return GalleryAddEvent.Fail.UnknownSource(url, context)
             }
 
             val realChapterUrl = try {
@@ -212,5 +212,9 @@ sealed class GalleryAddEvent {
 
         class NotFound(galleryUrl: String, context: Context) :
             Error(galleryUrl, context.getString(R.string.batch_add_not_exist_log_message, galleryUrl))
+
+        class UnknownSource(override val galleryUrl: String, val context: Context) : Fail() {
+            override val logMessage = context.getString(R.string.batch_add_unknown_source_log_message, galleryUrl)
+        }
     }
 }
diff --git a/app/src/main/res/values/strings_sy.xml b/app/src/main/res/values/strings_sy.xml
index 5076dd9f8..a22aa15a0 100644
--- a/app/src/main/res/values/strings_sy.xml
+++ b/app/src/main/res/values/strings_sy.xml
@@ -436,6 +436,7 @@
     <string name="batch_add_summary">\nSummary:\nAdded: %1$d gallerie(s)\nFailed: %2$d gallerie(s)</string>
     <string name="batch_add_success_log_message">Added manga: %1$s</string>
     <string name="batch_add_unknown_type_log_message">Unknown manga type for manga: %1$s</string>
+    <string name="batch_add_unknown_source_log_message">Unknown source for manga: %1$s</string>
     <string name="batch_add_not_exist_log_message">Manga does not exist: %1$s</string>
     <string name="gallery_adder_importing_manga">Importing manga (url: %1$s, fav: %2$s, forceSource: %3$s)…</string>
     <string name="gallery_adder_source_uri_must_match">Source URI match check error!</string>