diff --git a/infos/src/main.rs b/infos/src/main.rs
index a00c882b7..d6aa1f854 100644
--- a/infos/src/main.rs
+++ b/infos/src/main.rs
@@ -157,6 +157,8 @@ enum Command {
         prefixes: Vec<String>,
     },
 
+    /// Outputs a CSV with the documents ids along with
+    /// the field id and the word count where it appears.
     FieldIdWordCountDocids {
         /// Display the whole documents ids in details.
         #[structopt(long)]
@@ -714,8 +716,8 @@ fn field_id_word_count_docids(
         .id(&field_name)
         .with_context(|| format!("unknown field name: {}", &field_name))?;
 
-    let left = (field_id, 1);
-    let right = (field_id, 11);
+    let left = (field_id, 0);
+    let right = (field_id, u8::max_value());
     let iter = index.field_id_word_count_docids
         .range(rtxn, &(left..=right))?;
 
diff --git a/milli/src/search/criteria/exactness.rs b/milli/src/search/criteria/exactness.rs
index 7f27287b7..4d9e54f6e 100644
--- a/milli/src/search/criteria/exactness.rs
+++ b/milli/src/search/criteria/exactness.rs
@@ -1,9 +1,10 @@
+use std::convert::TryFrom;
 use std::mem::take;
+use std::ops::BitOr;
 
 use log::debug;
 use roaring::RoaringBitmap;
 use itertools::Itertools;
-use std::ops::BitOr;
 
 use crate::search::query_tree::{Operation, PrimitiveQueryPart};
 use crate::search::criteria::{
@@ -162,23 +163,24 @@ fn resolve_state(
     use State::*;
     match state {
         ExactAttribute(mut allowed_candidates) => {
-            let query_len = query.len() as u8;
             let mut candidates = RoaringBitmap::new();
-            let attributes_ids = ctx.searchable_fields_ids()?;
-            for id in attributes_ids {
-                if let Some(attribute_allowed_docids) = ctx.field_id_word_count_docids(id, query_len)? {
-                    let mut attribute_candidates_array = attribute_start_with_docids(ctx, id as u32, query)?;
-                    attribute_candidates_array.push(attribute_allowed_docids);
-                    candidates |= intersection_of(attribute_candidates_array.iter().collect());
+            if let Ok(query_len) = u8::try_from(query.len()) {
+                let attributes_ids = ctx.searchable_fields_ids()?;
+                for id in attributes_ids {
+                    if let Some(attribute_allowed_docids) = ctx.field_id_word_count_docids(id, query_len)? {
+                        let mut attribute_candidates_array = attribute_start_with_docids(ctx, id as u32, query)?;
+                        attribute_candidates_array.push(attribute_allowed_docids);
+                        candidates |= intersection_of(attribute_candidates_array.iter().collect());
+                    }
                 }
+
+                // only keep allowed candidates
+                candidates &= &allowed_candidates;
+                // remove current candidates from allowed candidates
+                allowed_candidates -= &candidates;
             }
 
-            // only keep allowed candidates
-            candidates &= &allowed_candidates;
-            // remove current candidates from allowed candidates
-            allowed_candidates -= &candidates;
             Ok((candidates, Some(AttributeStartsWith(allowed_candidates))))
-
         },
         AttributeStartsWith(mut allowed_candidates) => {
             let mut candidates = RoaringBitmap::new();