diff --git a/app/src/main/java/com/denizd/substitutionplan/database/FoodRepository.kt b/app/src/main/java/com/denizd/substitutionplan/database/FoodRepository.kt
index 9d4064a..dfdbc1c 100644
--- a/app/src/main/java/com/denizd/substitutionplan/database/FoodRepository.kt
+++ b/app/src/main/java/com/denizd/substitutionplan/database/FoodRepository.kt
@@ -18,26 +18,10 @@ internal class FoodRepository(application: Application) {
     }
 
     fun insert(food: Food) {
-        InsertAsync(substDao).execute(food)
+        substDao?.insertFood(food)
     }
 
     fun deleteAll() {
-        DeleteAllAsync(substDao).execute()
-    }
-
-    class InsertAsync(substDao: SubstDao?) : AsyncTask<Food, Void, Void>() {
-        private val mSubstDao = substDao
-        override fun doInBackground(vararg foods: Food): Void? {
-            mSubstDao?.insertFood(foods[0])
-            return null
-        }
-    }
-
-    class DeleteAllAsync(substDao: SubstDao?) : AsyncTask<Void, Void, Void>() {
-        private val mSubstDao = substDao
-        override fun doInBackground(vararg voids: Void): Void? {
-            mSubstDao?.deleteAllFoods()
-            return null
-        }
+        substDao?.deleteAllFoods()
     }
 }
\ No newline at end of file
diff --git a/app/src/main/java/com/denizd/substitutionplan/database/SubstRepository.kt b/app/src/main/java/com/denizd/substitutionplan/database/SubstRepository.kt
index dd8e2ec..d60108d 100644
--- a/app/src/main/java/com/denizd/substitutionplan/database/SubstRepository.kt
+++ b/app/src/main/java/com/denizd/substitutionplan/database/SubstRepository.kt
@@ -21,26 +21,10 @@ internal class SubstRepository(application: Application) {
     }
 
     fun insert(substitution: Substitution) {
-        InsertSubstAsync(substDao).execute(substitution)
+        substDao?.insertSubst(substitution)
     }
 
     fun deleteAllSubst() {
-        DeleteAllSubstAsync(substDao).execute()
-    }
-
-    class InsertSubstAsync(substDao: SubstDao?) : AsyncTask<Substitution, Void, Void>() {
-        private val mSubstDao = substDao
-        override fun doInBackground(vararg substitutions: Substitution): Void? {
-            mSubstDao?.insertSubst(substitutions[0])
-            return null
-        }
-    }
-
-    class DeleteAllSubstAsync(substDao: SubstDao?) : AsyncTask<Void, Void, Void>() {
-        private val mSubstDao = substDao
-        override fun doInBackground(vararg voids: Void): Void? {
-            mSubstDao?.deleteAllSubst()
-            return null
-        }
+        substDao?.deleteAllSubst()
     }
 }
\ No newline at end of file