diff --git a/app/src/main/java/org/koitharu/kotatsu/core/db/entity/EntityMapping.kt b/app/src/main/java/org/koitharu/kotatsu/core/db/entity/EntityMapping.kt
index 5960cb5e5..467fcab9a 100644
--- a/app/src/main/java/org/koitharu/kotatsu/core/db/entity/EntityMapping.kt
+++ b/app/src/main/java/org/koitharu/kotatsu/core/db/entity/EntityMapping.kt
@@ -11,7 +11,7 @@ import org.koitharu.kotatsu.utils.ext.longHashCode
 fun TagEntity.toMangaTag() = MangaTag(
 	key = this.key,
 	title = this.title.toTitleCase(),
-	source = MangaSource(this.source) ?: MangaSource.DUMMY,
+	source = MangaSource(this.source),
 )
 
 fun Collection<TagEntity>.toMangaTags() = mapToSet(TagEntity::toMangaTag)
@@ -28,7 +28,7 @@ fun MangaEntity.toManga(tags: Set<MangaTag>) = Manga(
 	coverUrl = this.coverUrl,
 	largeCoverUrl = this.largeCoverUrl,
 	author = this.author,
-	source = MangaSource(this.source) ?: MangaSource.DUMMY,
+	source = MangaSource(this.source),
 	tags = tags,
 )
 
diff --git a/app/src/main/java/org/koitharu/kotatsu/core/model/MangaSource.kt b/app/src/main/java/org/koitharu/kotatsu/core/model/MangaSource.kt
index 22c2319bf..341796c1e 100644
--- a/app/src/main/java/org/koitharu/kotatsu/core/model/MangaSource.kt
+++ b/app/src/main/java/org/koitharu/kotatsu/core/model/MangaSource.kt
@@ -1,18 +1,17 @@
 package org.koitharu.kotatsu.core.model
 
-import java.util.*
 import org.koitharu.kotatsu.parsers.model.MangaSource
 import org.koitharu.kotatsu.parsers.util.toTitleCase
+import java.util.Locale
 
 fun MangaSource.getLocaleTitle(): String? {
 	val lc = Locale(locale ?: return null)
 	return lc.getDisplayLanguage(lc).toTitleCase(lc)
 }
 
-@Suppress("FunctionName")
-fun MangaSource(name: String): MangaSource? {
+fun MangaSource(name: String): MangaSource {
 	MangaSource.values().forEach {
 		if (it.name == name) return it
 	}
-	return null
-}
\ No newline at end of file
+	return MangaSource.DUMMY
+}
diff --git a/app/src/debug/java/org/koitharu/kotatsu/core/parser/MangaParser.kt b/app/src/main/java/org/koitharu/kotatsu/core/parser/MangaParser.kt
similarity index 100%
rename from app/src/debug/java/org/koitharu/kotatsu/core/parser/MangaParser.kt
rename to app/src/main/java/org/koitharu/kotatsu/core/parser/MangaParser.kt
diff --git a/app/src/main/java/org/koitharu/kotatsu/core/parser/favicon/FaviconFetcher.kt b/app/src/main/java/org/koitharu/kotatsu/core/parser/favicon/FaviconFetcher.kt
index 957b1c846..ee052cfdd 100644
--- a/app/src/main/java/org/koitharu/kotatsu/core/parser/favicon/FaviconFetcher.kt
+++ b/app/src/main/java/org/koitharu/kotatsu/core/parser/favicon/FaviconFetcher.kt
@@ -14,7 +14,6 @@ import coil.network.HttpException
 import coil.request.Options
 import coil.size.Size
 import coil.size.pxOrElse
-import java.net.HttpURLConnection
 import okhttp3.OkHttpClient
 import okhttp3.Request
 import okhttp3.Response
@@ -27,6 +26,7 @@ import org.koitharu.kotatsu.core.parser.RemoteMangaRepository
 import org.koitharu.kotatsu.local.data.CacheDir
 import org.koitharu.kotatsu.parsers.model.MangaSource
 import org.koitharu.kotatsu.parsers.util.await
+import java.net.HttpURLConnection
 
 private const val FALLBACK_SIZE = 9999 // largest icon
 
@@ -150,7 +150,7 @@ class FaviconFetcher(
 
 		override fun create(data: Uri, options: Options, imageLoader: ImageLoader): Fetcher? {
 			return if (data.scheme == URI_SCHEME_FAVICON) {
-				val mangaSource = MangaSource(data.schemeSpecificPart) ?: return null
+				val mangaSource = MangaSource(data.schemeSpecificPart)
 				FaviconFetcher(okHttpClient, diskCache, mangaSource, options, mangaRepositoryFactory)
 			} else {
 				null
diff --git a/app/src/main/java/org/koitharu/kotatsu/settings/onboard/OnboardViewModel.kt b/app/src/main/java/org/koitharu/kotatsu/settings/onboard/OnboardViewModel.kt
index 1672657fd..82a7400b0 100644
--- a/app/src/main/java/org/koitharu/kotatsu/settings/onboard/OnboardViewModel.kt
+++ b/app/src/main/java/org/koitharu/kotatsu/settings/onboard/OnboardViewModel.kt
@@ -30,7 +30,7 @@ class OnboardViewModel @Inject constructor(
 
 	init {
 		if (settings.isSourcesSelected) {
-			selectedLocales.removeAll(settings.hiddenSources.mapNotNullToSet { x -> MangaSource(x)?.locale })
+			selectedLocales.removeAll(settings.hiddenSources.mapNotNullToSet { x -> MangaSource(x).locale })
 		} else {
 			val deviceLocales = LocaleListCompat.getDefault().mapToSet { x ->
 				x.language
diff --git a/app/src/release/java/org/koitharu/kotatsu/core/parser/DummyParser.kt b/app/src/release/java/org/koitharu/kotatsu/core/parser/DummyParser.kt
new file mode 100644
index 000000000..10779ef79
--- /dev/null
+++ b/app/src/release/java/org/koitharu/kotatsu/core/parser/DummyParser.kt
@@ -0,0 +1,39 @@
+package org.koitharu.kotatsu.core.parser
+
+import org.koitharu.kotatsu.parsers.MangaLoaderContext
+import org.koitharu.kotatsu.parsers.MangaParser
+import org.koitharu.kotatsu.parsers.config.ConfigKey
+import org.koitharu.kotatsu.parsers.exception.NotFoundException
+import org.koitharu.kotatsu.parsers.model.Manga
+import org.koitharu.kotatsu.parsers.model.MangaChapter
+import org.koitharu.kotatsu.parsers.model.MangaPage
+import org.koitharu.kotatsu.parsers.model.MangaSource
+import org.koitharu.kotatsu.parsers.model.MangaTag
+import org.koitharu.kotatsu.parsers.model.SortOrder
+import java.util.EnumSet
+
+class DummyParser(override val context: MangaLoaderContext) : MangaParser(MangaSource.DUMMY) {
+
+	override val configKeyDomain: ConfigKey.Domain
+		get() = ConfigKey.Domain("localhost", null)
+
+	override val sortOrders: Set<SortOrder>
+		get() = EnumSet.allOf(SortOrder::class.java)
+
+	override suspend fun getDetails(manga: Manga): Manga = stub()
+
+	override suspend fun getList(
+		offset: Int,
+		query: String?,
+		tags: Set<MangaTag>?,
+		sortOrder: SortOrder,
+	): List<Manga> = stub()
+
+	override suspend fun getPages(chapter: MangaChapter): List<MangaPage> = stub()
+
+	override suspend fun getTags(): Set<MangaTag> = stub()
+
+	private fun stub(): Nothing {
+		throw NotFoundException("Usage of Dummy parser in release build", "")
+	}
+}
diff --git a/app/src/release/java/org/koitharu/kotatsu/core/parser/MangaParser.kt b/app/src/release/java/org/koitharu/kotatsu/core/parser/MangaParser.kt
deleted file mode 100644
index a8f4377e5..000000000
--- a/app/src/release/java/org/koitharu/kotatsu/core/parser/MangaParser.kt
+++ /dev/null
@@ -1,10 +0,0 @@
-package org.koitharu.kotatsu.core.parser
-
-import org.koitharu.kotatsu.parsers.MangaLoaderContext
-import org.koitharu.kotatsu.parsers.MangaParser
-import org.koitharu.kotatsu.parsers.model.MangaSource
-import org.koitharu.kotatsu.parsers.newParser
-
-fun MangaParser(source: MangaSource, loaderContext: MangaLoaderContext): MangaParser {
-	return source.newParser(loaderContext)
-}
\ No newline at end of file