diff --git a/src/slic3r/GUI/GLCanvas3D.cpp b/src/slic3r/GUI/GLCanvas3D.cpp
index 579333f012..be9aed6665 100644
--- a/src/slic3r/GUI/GLCanvas3D.cpp
+++ b/src/slic3r/GUI/GLCanvas3D.cpp
@@ -9934,11 +9934,7 @@ void GLCanvas3D::_set_warning_notification(EWarning warning, bool state)
     case EWarning::ToolHeightOutside:  text = _u8L("A G-code path goes beyond the max print height."); error = ErrorType::SLICING_ERROR; break;
     case EWarning::ToolpathOutside:    text = _u8L("A G-code path goes beyond the plate boundaries."); error = ErrorType::SLICING_ERROR; break;
     case EWarning::TPUPrintableError: {
-        int master_extruder_id = 1;  // main extruder is left or right
-        if (m_config->has("master_extruder_id"))
-            master_extruder_id = m_config->opt_int("master_extruder_id"); // base 1
-        std::string extruder_name = extruder_name_list[master_extruder_id-1];
-        text = (boost::format(_u8L("Only the %s with external filament spool can print TPU")) %extruder_name).str();
+        text = _u8L("Not support printing 2 or more TPU filaments.");
         error = ErrorType::SLICING_ERROR;
         break;
     }
diff --git a/src/slic3r/GUI/PartPlate.cpp b/src/slic3r/GUI/PartPlate.cpp
index 87477f7dee..3303119d74 100644
--- a/src/slic3r/GUI/PartPlate.cpp
+++ b/src/slic3r/GUI/PartPlate.cpp
@@ -1759,23 +1759,8 @@ bool PartPlate::check_tpu_printable_status(const DynamicPrintConfig & config, co
 {
     bool tpu_valid = true;
 
-    if (!tpu_filaments.empty()) {
-        if (tpu_filaments.size() > 1)
-            tpu_valid = false;
-        else if (get_real_filament_map_mode(config) == FilamentMapMode::fmmManual) {
-            if (config.has("master_extruder_id")) {
-                int tpu_filament_id = *tpu_filaments.begin();
-                std::vector<int> filament_map    = get_real_filament_maps(config);
-                int extruder_id = filament_map[tpu_filament_id];
-
-                int master_extruder_id = config.opt_int("master_extruder_id");  // base 1
-                if (master_extruder_id != extruder_id)
-                    tpu_valid = false;
-            }
-        }
-    }
-
-    return tpu_valid;
+    // only support at most 1 tpu
+    return tpu_filaments.size() <=1;
 }
 
 bool PartPlate::check_mixture_of_pla_and_petg(const DynamicPrintConfig &config)