diff --git a/crates/editor/src/editor.rs b/crates/editor/src/editor.rs
index df13f748066a3b98da2b69bf32d262c3aadc625b..81ee6a01defd7e3695658dd9b7f6970d8c3d3465 100644
--- a/crates/editor/src/editor.rs
+++ b/crates/editor/src/editor.rs
@@ -14188,7 +14188,7 @@ pub fn diagnostic_block_renderer(
             .relative()
             .size_full()
             .pl(cx.gutter_dimensions.width)
-            .w(cx.max_width + cx.gutter_dimensions.width)
+            .w(cx.max_width - cx.gutter_dimensions.full_width())
             .child(
                 div()
                     .flex()