diff --git a/meilidb-data/src/database/main_index.rs b/meilidb-data/src/database/main_index.rs
index d7d4e1fbd..9718e3c96 100644
--- a/meilidb-data/src/database/main_index.rs
+++ b/meilidb-data/src/database/main_index.rs
@@ -73,7 +73,7 @@ impl MainIndex {
     pub fn set_ranked_map(&self, value: &RankedMap) -> Result<(), Error> {
         let mut bytes = Vec::new();
         value.write_to_bin(&mut bytes)?;
-        self.0.set("ranked_map", bytes)?;
+        self.0.set("ranked-map", bytes)?;
         Ok(())
     }
 }