diff --git a/app/src/main/java/eu/kanade/tachiyomi/data/database/models/Manga.kt b/app/src/main/java/eu/kanade/tachiyomi/data/database/models/Manga.kt
index 1f72ec81ee..9a59be0966 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/data/database/models/Manga.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/data/database/models/Manga.kt
@@ -54,9 +54,9 @@ interface Manga : SManga {
 
     fun showChapterTitle(defaultShow: Boolean): Boolean = chapter_flags and DISPLAY_MASK == DISPLAY_NUMBER
 
-    fun seriesType(context: Context): String {
+    fun seriesType(context: Context, sourceManager: SourceManager? = null): String {
         return context.getString(
-            when (seriesType()) {
+            when (seriesType(sourceManager = sourceManager)) {
                 TYPE_WEBTOON -> R.string.webtoon
                 TYPE_MANHWA -> R.string.manhwa
                 TYPE_MANHUA -> R.string.manhua
@@ -79,8 +79,8 @@ interface Manga : SManga {
     /**
      * The type of comic the manga is (ie. manga, manhwa, manhua)
      */
-    fun seriesType(useOriginalTags: Boolean = false, customTags: String? = null): Int {
-        val sourceName = Injekt.get<SourceManager>().getOrStub(source).name
+    fun seriesType(useOriginalTags: Boolean = false, customTags: String? = null, sourceManager: SourceManager? = null): Int {
+        val sourceName by lazy { (sourceManager ?: Injekt.get()).getOrStub(source).name }
         val tags = customTags ?: if (useOriginalTags) originalGenre else genre
         val currentTags = tags?.split(",")?.map { it.trim().toLowerCase(Locale.US) } ?: emptyList()
         return if (currentTags.any { tag -> isMangaTag(tag) }) {
diff --git a/app/src/main/java/eu/kanade/tachiyomi/ui/library/LibraryItem.kt b/app/src/main/java/eu/kanade/tachiyomi/ui/library/LibraryItem.kt
index 6b60468173..944dc6e88d 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/ui/library/LibraryItem.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/ui/library/LibraryItem.kt
@@ -1,6 +1,5 @@
 package eu.kanade.tachiyomi.ui.library
 
-import android.annotation.SuppressLint
 import android.view.Gravity
 import android.view.View
 import android.view.ViewGroup
@@ -36,6 +35,7 @@ class LibraryItem(
     var downloadCount = -1
     var unreadType = 2
 
+    private val sourceManager: SourceManager by injectLazy()
     private val uniformSize: Boolean
         get() = preferences.uniformGrid().get()
 
@@ -160,16 +160,18 @@ class LibraryItem(
             } else containsGenre(constraint, manga.genre?.split(", "))
     }
 
-    @SuppressLint("DefaultLocale")
     private fun containsGenre(tag: String, genres: List<String>?): Boolean {
         if (tag.trim().isEmpty()) return true
         return if (tag.startsWith("-")) {
             genres?.find {
-                it.trim().equals(tag.substringAfter("-"), ignoreCase = true)
+                val realTag = tag.substringAfter("-")
+                it.trim().equals(realTag, ignoreCase = true) ||
+                    manga.seriesType(preferences.context, sourceManager).equals(realTag, true)
             } == null
         } else {
             genres?.find {
-                it.trim().equals(tag, ignoreCase = true)
+                it.trim().equals(tag, ignoreCase = true) ||
+                    manga.seriesType(preferences.context, sourceManager).equals(tag, true)
             } != null
         }
     }
diff --git a/app/src/main/java/eu/kanade/tachiyomi/ui/library/LibraryPresenter.kt b/app/src/main/java/eu/kanade/tachiyomi/ui/library/LibraryPresenter.kt
index 3a4bf1135a..6968d4e010 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/ui/library/LibraryPresenter.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/ui/library/LibraryPresenter.kt
@@ -286,9 +286,9 @@ class LibraryPresenter(
 
         if (filterMangaType > 0) {
             if (if (filterMangaType == Manga.TYPE_MANHWA) {
-                (filterMangaType != item.manga.seriesType() && filterMangaType != Manga.TYPE_WEBTOON)
+                (filterMangaType != item.manga.seriesType(sourceManager = sourceManager) && filterMangaType != Manga.TYPE_WEBTOON)
             } else {
-                    filterMangaType != item.manga.seriesType()
+                    filterMangaType != item.manga.seriesType(sourceManager = sourceManager)
                 }
             ) return false
         }