diff --git a/xs/src/libslic3r/SLAPrint.cpp b/xs/src/libslic3r/SLAPrint.cpp
index 02043e191..c15c928a4 100644
--- a/xs/src/libslic3r/SLAPrint.cpp
+++ b/xs/src/libslic3r/SLAPrint.cpp
@@ -54,13 +54,14 @@ SLAPrint::slice()
         for (size_t i = 0; i < slices.size(); ++i)
             this->layers[i].slices.expolygons = slices[i];
     }
+    this->config.get_abs_value("infill_extrusion_width", this->config.layer_height.value);
     
     // generate infill
     if (this->config.fill_density < 100) {
         std::unique_ptr<Fill> fill(Fill::new_from_type(this->config.fill_pattern.value));
         fill->bounding_box.merge(Point::new_scale(bb.min.x, bb.min.y));
         fill->bounding_box.merge(Point::new_scale(bb.max.x, bb.max.y));
-        fill->min_spacing   = this->config.get_abs_value("infill_extrusion_width", this->config.layer_height.value);
+        fill->min_spacing   = ( this->config.get_abs_value("infill_extrusion_width", this->config.layer_height.value) > 0 ? this->config.get_abs_value("infill_extrusion_width", this->config.layer_height.value) : 0.3);
         fill->angle         = Geometry::deg2rad(this->config.fill_angle.value);
         fill->density       = this->config.fill_density.value/100;