diff --git a/crates/rust-analyzer/src/conv.rs b/crates/rust-analyzer/src/conv.rs
index d0218dcbf7..7e30956cc3 100644
--- a/crates/rust-analyzer/src/conv.rs
+++ b/crates/rust-analyzer/src/conv.rs
@@ -114,10 +114,10 @@ impl Conv for Severity {
     }
 }
 
-impl ConvWith<(&LineIndex, LineEndings, usize)> for CompletionItem {
+impl ConvWith<(&LineIndex, LineEndings, &mut usize)> for CompletionItem {
     type Output = ::lsp_types::CompletionItem;
 
-    fn conv_with(self, ctx: (&LineIndex, LineEndings, usize)) -> ::lsp_types::CompletionItem {
+    fn conv_with(self, ctx: (&LineIndex, LineEndings, &mut usize)) -> ::lsp_types::CompletionItem {
         let mut additional_text_edits = Vec::new();
         let mut text_edit = None;
         // LSP does not allow arbitrary edits in completion, so we have to do a
@@ -170,7 +170,8 @@ impl ConvWith<(&LineIndex, LineEndings, usize)> for CompletionItem {
                 CompletionScore::TypeAndNameMatch => res.preselect = Some(true),
                 CompletionScore::TypeMatch => {}
             }
-            res.sort_text = Some(format!("{:02}", ctx.2));
+            res.sort_text = Some(format!("{:02}", *ctx.2));
+            *ctx.2 += 1;
         }
 
         if self.deprecated() {
diff --git a/crates/rust-analyzer/src/main_loop/handlers.rs b/crates/rust-analyzer/src/main_loop/handlers.rs
index d18d2de348..08f5ad47c2 100644
--- a/crates/rust-analyzer/src/main_loop/handlers.rs
+++ b/crates/rust-analyzer/src/main_loop/handlers.rs
@@ -423,10 +423,10 @@ pub fn handle_completion(
     };
     let line_index = world.analysis().file_line_index(position.file_id)?;
     let line_endings = world.file_line_endings(position.file_id);
+    let mut count_sort_text_item = 0usize;
     let items: Vec<CompletionItem> = items
         .into_iter()
-        .enumerate()
-        .map(|(idx, item)| item.conv_with((&line_index, line_endings, idx)))
+        .map(|item| item.conv_with((&line_index, line_endings, &mut count_sort_text_item)))
         .collect();
 
     Ok(Some(items.into()))