diff --git a/src/Window.zig b/src/Window.zig
index b0c78d063..75935e398 100644
--- a/src/Window.zig
+++ b/src/Window.zig
@@ -392,7 +392,7 @@ fn queueWrite(self: *Window, data: []const u8) !void {
             ttyWrite,
         );
 
-        i += end;
+        i = end;
     }
 }