diff --git a/crates/editor/src/editor.rs b/crates/editor/src/editor.rs
index ad4ebd2655..4cbd8965df 100644
--- a/crates/editor/src/editor.rs
+++ b/crates/editor/src/editor.rs
@@ -7907,7 +7907,7 @@ impl Editor {
                 .insert_blocks(
                     diagnostic_group.iter().map(|entry| {
                         let diagnostic = entry.diagnostic.clone();
-                        let message_height = diagnostic.message.lines().count() as u8;
+                        let message_height = diagnostic.message.matches('\n').count() as u8 + 1;
                         BlockProperties {
                             style: BlockStyle::Fixed,
                             position: buffer.anchor_after(entry.range.start),