diff --git a/src/libslic3r/GCode.cpp b/src/libslic3r/GCode.cpp
index 8519646c2..a53b6bd7c 100644
--- a/src/libslic3r/GCode.cpp
+++ b/src/libslic3r/GCode.cpp
@@ -958,7 +958,7 @@ namespace DoExport {
 	                skirts.emplace_back(std::move(s));
 	            }
 	            ooze_prevention.enable = true;
-	            ooze_prevention.standby_points = offset(Slic3r::Geometry::convex_hull(skirts), scale_(3.f)).front().equally_spaced_points(scale_(10.));
+	            ooze_prevention.standby_points = offset(Slic3r::Geometry::convex_hull(skirts), float(scale_(3.))).front().equally_spaced_points(float(scale_(10.)));
 	#if 0
 	                require "Slic3r/SVG.pm";
 	                Slic3r::SVG::output(