diff --git a/src/libslic3r/GCode.cpp b/src/libslic3r/GCode.cpp
index 091b693d70..986cca50e8 100644
--- a/src/libslic3r/GCode.cpp
+++ b/src/libslic3r/GCode.cpp
@@ -2890,6 +2890,7 @@ void GCode::_do_export(Print& print, GCodeOutputStream &file, ThumbnailsGenerato
     // SoftFever: calib
     if (print.calib_params().mode == CalibMode::Calib_PA_Line) {
         std::string gcode;
+        gcode += ";" + GCodeProcessor::reserved_tag(GCodeProcessor::ETags::Layer_Change) + "\n";
         if ((print.default_object_config().outer_wall_acceleration.value > 0 && print.default_object_config().outer_wall_acceleration.value > 0)) {
             gcode += m_writer.set_print_acceleration((unsigned int)floor(print.default_object_config().outer_wall_acceleration.value + 0.5));
         }