diff --git a/filter-parser/src/condition.rs b/filter-parser/src/condition.rs
index 63fab7e8f..8453f2639 100644
--- a/filter-parser/src/condition.rs
+++ b/filter-parser/src/condition.rs
@@ -19,7 +19,6 @@ pub enum Condition<'a> {
     GreaterThan(Token<'a>),
     GreaterThanOrEqual(Token<'a>),
     Equal(Token<'a>),
-    NotEqual(Token<'a>),
     Null,
     Empty,
     Exists,
@@ -39,7 +38,9 @@ pub fn parse_condition(input: Span) -> IResult<FilterCondition> {
     let condition = match *op.fragment() {
         "<=" => FilterCondition::Condition { fid, op: LowerThanOrEqual(value) },
         ">=" => FilterCondition::Condition { fid, op: GreaterThanOrEqual(value) },
-        "!=" => FilterCondition::Condition { fid, op: NotEqual(value) },
+        "!=" => {
+            FilterCondition::Not(Box::new(FilterCondition::Condition { fid, op: Equal(value) }))
+        }
         "<" => FilterCondition::Condition { fid, op: LowerThan(value) },
         ">" => FilterCondition::Condition { fid, op: GreaterThan(value) },
         "=" => FilterCondition::Condition { fid, op: Equal(value) },
diff --git a/filter-parser/src/lib.rs b/filter-parser/src/lib.rs
index 61e534adb..6b04dabcb 100644
--- a/filter-parser/src/lib.rs
+++ b/filter-parser/src/lib.rs
@@ -534,7 +534,7 @@ pub mod tests {
         insta::assert_display_snapshot!(p(" colour IN [green, blue] "), @"{colour} IN[{green}, {blue}, ]");
 
         // Test conditions
-        insta::assert_display_snapshot!(p("channel != ponce"), @"{channel} != {ponce}");
+        insta::assert_display_snapshot!(p("channel != ponce"), @"NOT ({channel} = {ponce})");
         insta::assert_display_snapshot!(p("NOT channel = ponce"), @"NOT ({channel} = {ponce})");
         insta::assert_display_snapshot!(p("subscribers < 1000"), @"{subscribers} < {1000}");
         insta::assert_display_snapshot!(p("subscribers > 1000"), @"{subscribers} > {1000}");
@@ -604,17 +604,17 @@ pub mod tests {
         insta::assert_display_snapshot!(p("_geoBoundingBox([12,13],[14,15])"), @"_geoBoundingBox([{12}, {13}], [{14}, {15}])");
 
         // Test OR + AND
-        insta::assert_display_snapshot!(p("channel = ponce AND 'dog race' != 'bernese mountain'"), @"AND[{channel} = {ponce}, {dog race} != {bernese mountain}, ]");
-        insta::assert_display_snapshot!(p("channel = ponce OR 'dog race' != 'bernese mountain'"), @"OR[{channel} = {ponce}, {dog race} != {bernese mountain}, ]");
-        insta::assert_display_snapshot!(p("channel = ponce AND 'dog race' != 'bernese mountain' OR subscribers > 1000"), @"OR[AND[{channel} = {ponce}, {dog race} != {bernese mountain}, ], {subscribers} > {1000}, ]");
+        insta::assert_display_snapshot!(p("channel = ponce AND 'dog race' != 'bernese mountain'"), @"AND[{channel} = {ponce}, NOT ({dog race} = {bernese mountain}), ]");
+        insta::assert_display_snapshot!(p("channel = ponce OR 'dog race' != 'bernese mountain'"), @"OR[{channel} = {ponce}, NOT ({dog race} = {bernese mountain}), ]");
+        insta::assert_display_snapshot!(p("channel = ponce AND 'dog race' != 'bernese mountain' OR subscribers > 1000"), @"OR[AND[{channel} = {ponce}, NOT ({dog race} = {bernese mountain}), ], {subscribers} > {1000}, ]");
         insta::assert_display_snapshot!(
         p("channel = ponce AND 'dog race' != 'bernese mountain' OR subscribers > 1000 OR colour = red OR colour = blue AND size = 7"),
-        @"OR[AND[{channel} = {ponce}, {dog race} != {bernese mountain}, ], {subscribers} > {1000}, {colour} = {red}, AND[{colour} = {blue}, {size} = {7}, ], ]"
+        @"OR[AND[{channel} = {ponce}, NOT ({dog race} = {bernese mountain}), ], {subscribers} > {1000}, {colour} = {red}, AND[{colour} = {blue}, {size} = {7}, ], ]"
         );
 
         // Test parentheses
-        insta::assert_display_snapshot!(p("channel = ponce AND ( 'dog race' != 'bernese mountain' OR subscribers > 1000 )"), @"AND[{channel} = {ponce}, OR[{dog race} != {bernese mountain}, {subscribers} > {1000}, ], ]");
-        insta::assert_display_snapshot!(p("(channel = ponce AND 'dog race' != 'bernese mountain' OR subscribers > 1000) AND _geoRadius(12, 13, 14)"), @"AND[OR[AND[{channel} = {ponce}, {dog race} != {bernese mountain}, ], {subscribers} > {1000}, ], _geoRadius({12}, {13}, {14}), ]");
+        insta::assert_display_snapshot!(p("channel = ponce AND ( 'dog race' != 'bernese mountain' OR subscribers > 1000 )"), @"AND[{channel} = {ponce}, OR[NOT ({dog race} = {bernese mountain}), {subscribers} > {1000}, ], ]");
+        insta::assert_display_snapshot!(p("(channel = ponce AND 'dog race' != 'bernese mountain' OR subscribers > 1000) AND _geoRadius(12, 13, 14)"), @"AND[OR[AND[{channel} = {ponce}, NOT ({dog race} = {bernese mountain}), ], {subscribers} > {1000}, ], _geoRadius({12}, {13}, {14}), ]");
 
         // Test recursion
         // This is the most that is allowed
@@ -939,7 +939,6 @@ impl<'a> std::fmt::Display for Condition<'a> {
             Condition::GreaterThan(token) => write!(f, "> {token}"),
             Condition::GreaterThanOrEqual(token) => write!(f, ">= {token}"),
             Condition::Equal(token) => write!(f, "= {token}"),
-            Condition::NotEqual(token) => write!(f, "!= {token}"),
             Condition::Null => write!(f, "IS NULL"),
             Condition::Empty => write!(f, "IS EMPTY"),
             Condition::Exists => write!(f, "EXISTS"),
diff --git a/milli/src/search/facet/filter.rs b/milli/src/search/facet/filter.rs
index 5f8805217..c436fa47a 100644
--- a/milli/src/search/facet/filter.rs
+++ b/milli/src/search/facet/filter.rs
@@ -295,12 +295,6 @@ impl<'a> Filter<'a> {
                 };
                 return Ok(string_docids | number_docids);
             }
-            Condition::NotEqual(val) => {
-                let operator = Condition::Equal(val.clone());
-                let docids = Self::evaluate_operator(rtxn, index, field_id, &operator)?;
-                let all_ids = index.documents_ids(rtxn)?;
-                return Ok(all_ids - docids);
-            }
             Condition::Contains(val) => {
                 let value = crate::normalize_facet(val.value());
                 let finder = Finder::new(&value);