diff --git a/src/libslic3r/Fill/FillBase.cpp b/src/libslic3r/Fill/FillBase.cpp
index a766aaa30..7aa3e6855 100644
--- a/src/libslic3r/Fill/FillBase.cpp
+++ b/src/libslic3r/Fill/FillBase.cpp
@@ -616,11 +616,11 @@ Fill::do_gap_fill(const ExPolygons &gapfill_areas, const FillParams &params, Ext
 #endif
 
         ExtrusionEntityCollection gap_fill = thin_variable_width(polylines_gapfill, erGapFill, *params.flow);
-        //set role if needed
-        if (params.role != erSolidInfill) {
+        //set role if needed (it will confuse the auto-speed, so don't change it from gap fill)
+        /*if (params.role != erSolidInfill) {
             ExtrusionSetRole set_good_role(params.role);
             gap_fill.visit(set_good_role);
-        }
+        }*/
         //move them into the collection
         if (!gap_fill.entities.empty()) {
             ExtrusionEntityCollection *coll_gapfill = new ExtrusionEntityCollection();