diff --git a/poly2tri/sweep/sweep.cc b/poly2tri/sweep/sweep.cc
index ff439ab..9d157db 100644
--- a/poly2tri/sweep/sweep.cc
+++ b/poly2tri/sweep/sweep.cc
@@ -49,7 +49,7 @@ void Sweep::Triangulate(SweepContext& tcx)
 
 void Sweep::SweepPoints(SweepContext& tcx)
 {
-  for (int i = 1; i < tcx.point_count(); i++) {
+  for (size_t i = 1; i < tcx.point_count(); i++) {
     Point& point = *tcx.GetPoint(i);
     Node* node = &PointEvent(tcx, point);
     for (unsigned int i = 0; i < point.edge_list.size(); i++) {
@@ -115,7 +115,7 @@ void Sweep::EdgeEvent(SweepContext& tcx, Point& ep, Point& eq, Triangle* triangl
   if (o1 == COLLINEAR) {
     if( triangle->Contains(&eq, p1)) {
       triangle->MarkConstrainedEdge(&eq, p1 );
-      // We are modifying the constraint maybe it would be better to 
+      // We are modifying the constraint maybe it would be better to
       // not change the given constraint and just keep a variable for the new constraint
       tcx.edge_event.constrained_edge->q = p1;
       triangle = &triangle->NeighborAcross(point);
@@ -132,7 +132,7 @@ void Sweep::EdgeEvent(SweepContext& tcx, Point& ep, Point& eq, Triangle* triangl
   if (o2 == COLLINEAR) {
     if( triangle->Contains(&eq, p2)) {
       triangle->MarkConstrainedEdge(&eq, p2 );
-      // We are modifying the constraint maybe it would be better to 
+      // We are modifying the constraint maybe it would be better to
       // not change the given constraint and just keep a variable for the new constraint
       tcx.edge_event.constrained_edge->q = p2;
       triangle = &triangle->NeighborAcross(point);
@@ -252,7 +252,7 @@ void Sweep::FillAdvancingFront(SweepContext& tcx, Node& n)
 
 // True if HoleAngle exceeds 90 degrees.
 bool Sweep::LargeHole_DontFill(Node* node) {
-  
+
   Node* nextNode = node->next;
   Node* prevNode = node->prev;
   if (!AngleExceeds90Degrees(node->point, nextNode->point, prevNode->point))