diff --git a/server/src/main/kotlin/eu/kanade/tachiyomi/annoations/Nsfw.kt b/server/src/main/kotlin/eu/kanade/tachiyomi/annoations/Nsfw.kt
deleted file mode 100644
index 5cff119a..00000000
--- a/server/src/main/kotlin/eu/kanade/tachiyomi/annoations/Nsfw.kt
+++ /dev/null
@@ -1,5 +0,0 @@
-package eu.kanade.tachiyomi.annoations
-
-@Retention(AnnotationRetention.RUNTIME)
-@Target(AnnotationTarget.CLASS)
-annotation class Nsfw
diff --git a/server/src/main/kotlin/suwayomi/tachidesk/manga/impl/extension/Extension.kt b/server/src/main/kotlin/suwayomi/tachidesk/manga/impl/extension/Extension.kt
index 4cc29623..f9a51240 100644
--- a/server/src/main/kotlin/suwayomi/tachidesk/manga/impl/extension/Extension.kt
+++ b/server/src/main/kotlin/suwayomi/tachidesk/manga/impl/extension/Extension.kt
@@ -51,9 +51,6 @@ object Extension {
     private val logger = KotlinLogging.logger {}
     private val applicationDirs by DI.global.instance<ApplicationDirs>()
 
-    private fun Any.isNsfw(): Boolean =
-        this::class.annotations.any { it.toString() == "@eu.kanade.tachiyomi.annotations.Nsfw()" }
-
     suspend fun installExtension(pkgName: String): Int {
         logger.debug("Installing $pkgName")
         val extensionRecord = extensionTableAsDataClass().first { it.pkgName == pkgName }
@@ -189,7 +186,7 @@ object Extension {
                         it[name] = httpSource.name
                         it[lang] = httpSource.lang
                         it[extension] = extensionId
-                        it[SourceTable.isNsfw] = isNsfw || extensionMainClassInstance.isNsfw()
+                        it[SourceTable.isNsfw] = isNsfw
                     }
                     logger.debug { "Installed source ${httpSource.name} (${httpSource.lang}) with id:${httpSource.id}" }
                 }