diff --git a/app/src/main/java/net/vonforst/evmap/viewmodel/FilterViewModel.kt b/app/src/main/java/net/vonforst/evmap/viewmodel/FilterViewModel.kt
index 6bdef5dc..2293bce6 100644
--- a/app/src/main/java/net/vonforst/evmap/viewmodel/FilterViewModel.kt
+++ b/app/src/main/java/net/vonforst/evmap/viewmodel/FilterViewModel.kt
@@ -256,6 +256,13 @@ data class MultipleChoiceFilterValue(
             !other.all && values == other.values
         }
     }
+
+    override fun hashCode(): Int {
+        var result = key.hashCode()
+        result = 31 * result + all.hashCode()
+        result = 31 * result + if (all) 0 else values.hashCode()
+        return result
+    }
 }
 
 @Entity