diff --git a/xs/src/libslic3r/SLAPrint.cpp b/xs/src/libslic3r/SLAPrint.cpp
index fdc7c4d3a..ceb89018e 100644
--- a/xs/src/libslic3r/SLAPrint.cpp
+++ b/xs/src/libslic3r/SLAPrint.cpp
@@ -189,10 +189,11 @@ SLAPrint::_infill_layer(size_t i, const Fill* _fill)
         fill->z        = layer.print_z;
         
         ExtrusionPath templ(erInternalInfill);
-        templ.width = fill->spacing();
+
         const ExPolygons internal_ex = intersection_ex(infill, internal);
         for (ExPolygons::const_iterator it = internal_ex.begin(); it != internal_ex.end(); ++it) {
             Polylines polylines = fill->fill_surface(Surface(stInternal, *it));
+            templ.width = fill->spacing(); // fill->spacing doesn't have anything defined until after fill_surface
             layer.infill.append(polylines, templ);
         }
     }