diff --git a/query-engine/connectors/query-connector/src/filter/scalar.rs b/query-engine/connectors/query-connector/src/filter/scalar.rs
index b3943e8aced..78c499b5210 100644
--- a/query-engine/connectors/query-connector/src/filter/scalar.rs
+++ b/query-engine/connectors/query-connector/src/filter/scalar.rs
@@ -1,7 +1,7 @@
 use super::Filter;
 use crate::compare::ScalarCompare;
 use prisma_models::{DataSourceFieldRef, ModelProjection, PrismaListValue, PrismaValue};
-use std::sync::Arc;
+use std::{collections::BTreeSet, sync::Arc};
 
 #[derive(Debug, Clone, PartialEq, Eq, Hash)]
 pub enum ScalarProjection {
@@ -31,11 +31,12 @@ impl ScalarFilter {
     }
 
     pub fn batched(self) -> Vec<ScalarFilter> {
-        fn inner(list: PrismaListValue) -> Vec<PrismaListValue> {
+        fn inner(mut list: PrismaListValue) -> Vec<PrismaListValue> {
+            let dedup_list: BTreeSet<_> = list.drain(..).collect();
             let mut batches = Vec::with_capacity(list.len() % BATCH_SIZE + 1);
             batches.push(Vec::with_capacity(BATCH_SIZE));
 
-            for (idx, item) in list.into_iter().enumerate() {
+            for (idx, item) in dedup_list.into_iter().enumerate() {
                 if idx != 0 && idx % BATCH_SIZE == 0 {
                     batches.push(Vec::with_capacity(BATCH_SIZE));
                 }