diff --git a/src/libslic3r/GCode/WipeTower.cpp b/src/libslic3r/GCode/WipeTower.cpp
index 17cf52dab1..f640cc0bdb 100644
--- a/src/libslic3r/GCode/WipeTower.cpp
+++ b/src/libslic3r/GCode/WipeTower.cpp
@@ -2653,8 +2653,8 @@ static WipeTower::ToolChangeResult merge_tcr(WipeTower::ToolChangeResult& first,
     assert(first.new_tool == second.initial_tool);
     WipeTower::ToolChangeResult out = first;
     if ((first.end_pos - second.start_pos).norm() > (float)EPSILON) {
-        std::string travel_gcode = "G1 X" + Slic3r::float_to_string_decimal_point(second.start_pos.x(), 3)
-                                   + " Y" + Slic3r::float_to_string_decimal_point(second.start_pos.y(), 3) +"F5400" + "\n";
+        std::string travel_gcode = "G1 X" + Slic3r::float_to_string_decimal_point(second.start_pos.x(), 3) + " Y" +
+                                   Slic3r::float_to_string_decimal_point(second.start_pos.y(), 3) + " F5400" + "\n";
         bool need_insert_travel = true;
         if (second.is_tool_change
             && is_approx(second.start_pos.x(), second.tool_change_start_pos.x())