diff --git a/src/libslic3r/GCode.cpp b/src/libslic3r/GCode.cpp
index 5fd8044d0c..713031fc3d 100644
--- a/src/libslic3r/GCode.cpp
+++ b/src/libslic3r/GCode.cpp
@@ -1500,8 +1500,8 @@ void GCode::_do_export(Print& print, GCodeOutputStream &file, ThumbnailsGenerato
     file.write_format("; HEADER_BLOCK_START\n");
     // Write information on the generator.
     file.write_format("; generated by %s on %s\n", Slic3r::header_slic3r_generated().c_str(), Slic3r::Utils::local_timestamp().c_str());
-    //BBS: total estimated printing time
-    file.write_format(";%s\n", GCodeProcessor::reserved_tag(GCodeProcessor::ETags::Estimated_Printing_Time_Placeholder).c_str());
+    if (is_bbl_printers)
+        file.write_format(";%s\n", GCodeProcessor::reserved_tag(GCodeProcessor::ETags::Estimated_Printing_Time_Placeholder).c_str());
     //BBS: total layer number
     file.write_format(";%s\n", GCodeProcessor::reserved_tag(GCodeProcessor::ETags::Total_Layer_Number_Placeholder).c_str());
     file.write_format("; HEADER_BLOCK_END\n\n");