diff --git a/src/libslic3r/GCode.cpp b/src/libslic3r/GCode.cpp
index b0419bf18..011158204 100644
--- a/src/libslic3r/GCode.cpp
+++ b/src/libslic3r/GCode.cpp
@@ -3849,6 +3849,15 @@ GCode::LayerResult GCode::process_layer(
                                 break;
                             }
                     }
+                    if (print.config().filament_is_support.get_at(dontcare_extruder)) {
+                        // The last extruder printed on the previous layer extrudes support filament.
+                        // Try to find a non-support extruder on the same layer.
+                        for (unsigned int extruder_id : layer_tools.extruders)
+                            if (!print.config().filament_is_support.get_at(extruder_id)) {
+                                dontcare_extruder = extruder_id;
+                                break;
+                            }
+                    }
                     if (support_dontcare)
                         support_extruder = dontcare_extruder;
                     if (interface_dontcare)