diff --git a/app/src/main/java/fr/free/nrw/commons/upload/categories/BaseDelegateAdapter.kt b/app/src/main/java/fr/free/nrw/commons/upload/categories/BaseDelegateAdapter.kt
index f1e4917a0..d87162c1f 100644
--- a/app/src/main/java/fr/free/nrw/commons/upload/categories/BaseDelegateAdapter.kt
+++ b/app/src/main/java/fr/free/nrw/commons/upload/categories/BaseDelegateAdapter.kt
@@ -4,7 +4,7 @@ import androidx.recyclerview.widget.DiffUtil
 import com.hannesdorfmann.adapterdelegates4.AdapterDelegate
 import com.hannesdorfmann.adapterdelegates4.AsyncListDifferDelegationAdapter
 
-abstract class BaseDelegateAdapter<T>(
+abstract class BaseDelegateAdapter<T : Any>(
     vararg delegates: AdapterDelegate<List<T>>,
     areItemsTheSame: (T, T) -> Boolean,
     areContentsTheSame: (T, T) -> Boolean = { old, new -> old == new },