diff --git a/meilisearch/src/error.rs b/meilisearch/src/error.rs
index bec233971..23a101080 100644
--- a/meilisearch/src/error.rs
+++ b/meilisearch/src/error.rs
@@ -55,7 +55,7 @@ impl ErrorCode for MeilisearchHttpError {
             MeilisearchHttpError::MissingPayload(_) => Code::MissingPayload,
             MeilisearchHttpError::InvalidContentType(_, _) => Code::InvalidContentType,
             MeilisearchHttpError::DocumentNotFound(_) => Code::DocumentNotFound,
-            MeilisearchHttpError::InvalidExpression(_, _) => Code::Filter,
+            MeilisearchHttpError::InvalidExpression(_, _) => Code::InvalidSearchFilter,
             MeilisearchHttpError::PayloadTooLarge => Code::PayloadTooLarge,
             MeilisearchHttpError::SwapIndexPayloadWrongLength(_) => Code::InvalidSwapIndexes,
             MeilisearchHttpError::IndexUid(e) => e.error_code(),
diff --git a/meilisearch/src/search.rs b/meilisearch/src/search.rs
index cd6dc6e30..39af9bedb 100644
--- a/meilisearch/src/search.rs
+++ b/meilisearch/src/search.rs
@@ -695,7 +695,7 @@ fn parse_filter(facets: &Value) -> Result<Option<Filter>, MeilisearchHttpError>
             Ok(condition)
         }
         Value::Array(arr) => parse_filter_array(arr),
-        v => Err(MeilisearchHttpError::InvalidExpression(&["Array"], v.clone())),
+        v => Err(MeilisearchHttpError::InvalidExpression(&["String", "Array"], v.clone())),
     }
 }
 
diff --git a/meilisearch/tests/search/errors.rs b/meilisearch/tests/search/errors.rs
index 1a82dcbc5..60a52d07d 100644
--- a/meilisearch/tests/search/errors.rs
+++ b/meilisearch/tests/search/errors.rs
@@ -233,20 +233,26 @@ async fn search_bad_attributes_to_highlight() {
 
 #[actix_rt::test]
 async fn search_bad_filter() {
+    // Since a filter is deserialized as a json Value it will never fail to deserialize.
+    // Thus the error message is not generated by deserr but written by us.
     let server = Server::new().await;
     let index = server.index("test");
+    // Also, to trigger the error message we need to effectively create the index or else it'll throw an
+    // index does not exists error.
+    let (_, code) = index.create(None).await;
+    snapshot!(code, @"202 Accepted");
 
-    // Can't make the `filter` fail with a get search since it'll accept anything as a strings.
     let (response, code) = index.search_post(json!({ "filter": true })).await;
-    snapshot!(code, @"404 Not Found");
+    snapshot!(code, @"400 Bad Request");
     snapshot!(json_string!(response), @r###"
     {
-      "message": "Index `test` not found.",
-      "code": "index_not_found",
+      "message": "Invalid syntax for the filter parameter: `expected String, Array, found: true`.",
+      "code": "invalid_search_filter",
       "type": "invalid_request",
-      "link": "https://docs.meilisearch.com/errors#index-not-found"
+      "link": "https://docs.meilisearch.com/errors#invalid-search-filter"
     }
     "###);
+    // Can't make the `filter` fail with a get search since it'll accept anything as a strings.
 }
 
 #[actix_rt::test]