diff --git a/src/libslic3r/ShapeDiameterFunction.cpp b/src/libslic3r/ShapeDiameterFunction.cpp
index 71eacf5722..2625f1d583 100644
--- a/src/libslic3r/ShapeDiameterFunction.cpp
+++ b/src/libslic3r/ShapeDiameterFunction.cpp
@@ -405,7 +405,7 @@ indexed_triangle_set ShapeDiameterFunction::subdivide(
 
             int index_offset = count_edge_vertices/2;
             size_t i2 = (divide_index + 2) % 3;
-            if (count_edge_vertices % 2 == 0 && key_swap == l[i1] < l[i2]) {
+            if ((count_edge_vertices % 2 == 0) && (key_swap == (l[i1] < l[i2]))) {
                 --index_offset;
             }            
             int sign = (vs.positive_order) ? 1 : -1;
diff --git a/src/libslic3r/SimplifyMeshImpl.hpp b/src/libslic3r/SimplifyMeshImpl.hpp
index 60648168c5..525b2ed78e 100644
--- a/src/libslic3r/SimplifyMeshImpl.hpp
+++ b/src/libslic3r/SimplifyMeshImpl.hpp
@@ -809,7 +809,6 @@ void SimplifiableMesh<Mesh>::remove_small_edges(double edge_length, double max_t
     // main iteration loop
     int               deleted_triangles = 0;
     std::vector<bool> deleted0, deleted1;
-    size_t            triangle_count = m_faceinfo.size();
 
     // main reduction become on first iteration
     for (int iteration = 0; iteration < 99; iteration++) {