diff --git a/crates/diagnostics/src/diagnostics.rs b/crates/diagnostics/src/diagnostics.rs
index 9bedc2db4a1..dc3708e9307 100644
--- a/crates/diagnostics/src/diagnostics.rs
+++ b/crates/diagnostics/src/diagnostics.rs
@@ -624,6 +624,7 @@ impl ProjectDiagnosticsEditor {
                         });
                     })
                 }
+                let buffer_snapshot = buffer.read(cx).snapshot();
                 let excerpt_ranges: Vec<_> = excerpt_ranges
                     .into_iter()
                     .map(|range| ExcerptRange {