diff --git a/app/src/main/kotlin/com/simplemobiletools/calendar/pro/models/EventRepetition.kt b/app/src/main/kotlin/com/simplemobiletools/calendar/pro/models/EventRepetition.kt
index 86db25efb..0e94ba01d 100644
--- a/app/src/main/kotlin/com/simplemobiletools/calendar/pro/models/EventRepetition.kt
+++ b/app/src/main/kotlin/com/simplemobiletools/calendar/pro/models/EventRepetition.kt
@@ -1,11 +1,9 @@
 package com.simplemobiletools.calendar.pro.models
 
-import androidx.room.ColumnInfo
-import androidx.room.Entity
-import androidx.room.Index
-import androidx.room.PrimaryKey
+import androidx.room.*
 
-@Entity(tableName = "event_repetitions", indices = [(Index(value = ["id"], unique = true))])
+@Entity(tableName = "event_repetitions", indices = [(Index(value = ["id"], unique = true))],
+        foreignKeys = [ForeignKey(entity = Event::class, onDelete = ForeignKey.CASCADE, parentColumns = ["id"], childColumns = ["event_id"])])
 data class EventRepetition(
         @PrimaryKey(autoGenerate = true) var id: Long?,
         @ColumnInfo(name = "event_id") val eventId: Long,
diff --git a/app/src/main/kotlin/com/simplemobiletools/calendar/pro/models/EventRepetitionException.kt b/app/src/main/kotlin/com/simplemobiletools/calendar/pro/models/EventRepetitionException.kt
index f6d993fdf..f27ce38fc 100644
--- a/app/src/main/kotlin/com/simplemobiletools/calendar/pro/models/EventRepetitionException.kt
+++ b/app/src/main/kotlin/com/simplemobiletools/calendar/pro/models/EventRepetitionException.kt
@@ -1,11 +1,9 @@
 package com.simplemobiletools.calendar.pro.models
 
-import androidx.room.ColumnInfo
-import androidx.room.Entity
-import androidx.room.Index
-import androidx.room.PrimaryKey
+import androidx.room.*
 
-@Entity(tableName = "event_repetition_exceptions", indices = [(Index(value = ["id"], unique = true))])
+@Entity(tableName = "event_repetition_exceptions", indices = [(Index(value = ["id"], unique = true))],
+        foreignKeys = [ForeignKey(entity = Event::class, onDelete = ForeignKey.CASCADE, parentColumns = ["id"], childColumns = ["event_id"])])
 data class EventRepetitionException(
         @PrimaryKey(autoGenerate = true) var id: Long?,
         @ColumnInfo(name = "occurrence_daycode") val daycode: String,