diff --git a/helix-term/src/commands.rs b/helix-term/src/commands.rs
index c9e35062..193d5d40 100644
--- a/helix-term/src/commands.rs
+++ b/helix-term/src/commands.rs
@@ -1414,7 +1414,7 @@ fn copy_selection_on_line(cx: &mut Context, direction: Direction) {
         let (head, anchor) = if range.anchor < range.head {
             (range.head - 1, range.anchor)
         } else {
-            (range.head, range.anchor - 1)
+            (range.head, range.anchor.saturating_sub(1))
         };
 
         let tab_width = doc.tab_width();