1 files changed, 3 insertions, 0 deletions
diff --git a/src/live_effects/parameter/filletchamferpointarray.cpp b/src/live_effects/parameter/filletchamferpointarray.cpp
index c469b5fdd..43352507e 100644
--- a/src/live_effects/parameter/filletchamferpointarray.cpp
+++ b/src/live_effects/parameter/filletchamferpointarray.cpp
@@ -270,6 +270,9 @@ void FilletChamferPointArrayParam::recalculate_knots(
     Piecewise<D2<SBasis> > const &pwd2_in)
 {
     bool change = false;
+    if(_vector.size() == 0){
+        return;
+    }
     PathVector pathv = path_from_piecewise(pwd2_in, 0.001);
     if (!pathv.empty()) {
         std::vector<Point> result;