diff --git a/common.gradle b/common.gradle
index 5463638ae..903d0d593 100644
--- a/common.gradle
+++ b/common.gradle
@@ -34,6 +34,7 @@ android {
         manifestPlaceholders = [
                 appName : "Tachiyomi: $extName",
                 extClass: extClass,
+                extFactory: project.ext.properties.getOrDefault("extFactory", ""),
                 nsfw: project.ext.properties.getOrDefault("containsNsfw", false) ? 1 : 0,
         ]
     }
diff --git a/core/AndroidManifest.xml b/core/AndroidManifest.xml
index 3b92e1e2e..42882ce0e 100644
--- a/core/AndroidManifest.xml
+++ b/core/AndroidManifest.xml
@@ -7,6 +7,7 @@
     <application android:icon="@mipmap/ic_launcher" android:allowBackup="false" android:label="${appName}">
 
         <meta-data android:name="tachiyomi.extension.class" android:value="${extClass}" />
+        <meta-data android:name="tachiyomi.extension.factory" android:value="${extFactory}" />
         <meta-data android:name="tachiyomi.extension.nsfw" android:value="${nsfw}" />
 
     </application>
diff --git a/multisrc/src/main/java/eu/kanade/tachiyomi/multisrc/ThemeSourceGenerator.kt b/multisrc/src/main/java/eu/kanade/tachiyomi/multisrc/ThemeSourceGenerator.kt
index 59ed75db6..1e08d20ab 100644
--- a/multisrc/src/main/java/eu/kanade/tachiyomi/multisrc/ThemeSourceGenerator.kt
+++ b/multisrc/src/main/java/eu/kanade/tachiyomi/multisrc/ThemeSourceGenerator.kt
@@ -49,7 +49,7 @@ interface ThemeSourceGenerator {
             return listOf("eu", "kanade", "tachiyomi", "multisrc", themePkg).joinToString(separator)
         }
 
-        private fun writeGradle(gradle: File, source: ThemeSourceData, baseVersionCode: Int) {
+        private fun writeGradle(gradle: File, source: ThemeSourceData, themePkg: String, baseVersionCode: Int) {
             gradle.writeText("""
                 // THIS FILE IS AUTO-GENERATED; DO NOT EDIT
                 apply plugin: 'com.android.application'
@@ -59,6 +59,7 @@ interface ThemeSourceGenerator {
                     extName = '${source.name}'
                     pkgNameSuffix = '${pkgNameSuffix(source, ".")}'
                     extClass = '.${source.className}'
+                    extFactory = '$themePkg'
                     extVersionCode = ${baseVersionCode + source.overrideVersionCode + multisrcLibraryVersion}
                     libVersion = '1.2'
                     ${if (source.isNsfw) "containsNsfw = true\n" else ""}
@@ -98,7 +99,7 @@ interface ThemeSourceGenerator {
                 // remove everything from past runs
                 cleanDirectory(projectRootFile)
 
-                writeGradle(projectGradleFile, source, baseVersionCode)
+                writeGradle(projectGradleFile, source, themePkg, baseVersionCode)
                 writeAndroidManifest(projectAndroidManifestFile, manifestOverridesPath)
 
                 writeSourceClasses(projectSrcPath, srcOverridesPath, source, themePkg, themeClass)