diff --git a/src/raddbg/raddbg_widgets.c b/src/raddbg/raddbg_widgets.c
index b13fae9b..663879d5 100644
--- a/src/raddbg/raddbg_widgets.c
+++ b/src/raddbg/raddbg_widgets.c
@@ -1374,7 +1374,7 @@ rd_code_slice(RD_CodeSliceParams *params, TxtPt *cursor, TxtPt *mark, S64 *prefe
         break;
       }
     }
-    mouse_line_rng = txt_rng(txt_pt(mouse_pt.line, 1), txt_pt(mouse_pt.line, 1+line_range.max));
+    mouse_line_rng = txt_rng(txt_pt(mouse_pt.line, 1), txt_pt(mouse_pt.line, 1+(line_range.max-line_range.min)));
   }
   
   //////////////////////////////