diff --git a/crates/gpui/src/text_system/line_layout.rs b/crates/gpui/src/text_system/line_layout.rs
index ac27705801..ced49068c8 100644
--- a/crates/gpui/src/text_system/line_layout.rs
+++ b/crates/gpui/src/text_system/line_layout.rs
@@ -247,10 +247,11 @@ impl WrappedLineLayout {
         let wrapped_line_ix = (position.y / line_height) as usize;
 
         let wrapped_line_start_x = if wrapped_line_ix > 0 {
-            let wrap_boundary_ix = wrapped_line_ix - 1;
-            let wrap_boundary = self.wrap_boundaries[wrap_boundary_ix];
-            let run = &self.unwrapped_layout.runs[wrap_boundary.run_ix];
-            run.glyphs[wrap_boundary.glyph_ix].position.x
+            let Some(line_start_boundary) = self.wrap_boundaries.get(wrapped_line_ix - 1) else {
+                return None;
+            };
+            let run = &self.unwrapped_layout.runs[line_start_boundary.run_ix];
+            run.glyphs[line_start_boundary.glyph_ix].position.x
         } else {
             Pixels::ZERO
         };