diff --git a/src/libslic3r/Triangulation.cpp b/src/libslic3r/Triangulation.cpp
index 9119df7d9b..4ecdd43aee 100644
--- a/src/libslic3r/Triangulation.cpp
+++ b/src/libslic3r/Triangulation.cpp
@@ -28,7 +28,7 @@ inline void insert_edge(Triangulation::HalfEdges &edges, uint32_t &offset, const
 
 Triangulation::Indices Triangulation::triangulate(const Points &   points,
                                                   const HalfEdges &half_edges,
-                                                  bool allow_opposit_edge)
+                                                  bool allow_opposite_edge)
 {
     // IMPROVE use int point insted of float !!!
 
@@ -46,11 +46,11 @@ Triangulation::Indices Triangulation::triangulate(const Points &   points,
     vertices_handle.reserve(points.size());
     for (const auto &p : points) {
         Point cdt_p(p.x(), p.y());
-        auto  handl = cdt.insert(cdt_p);
-        vertices_handle.push_back(handl);
+        auto handle = cdt.insert(cdt_p);
+        vertices_handle.push_back(handle);
         // point index
         uint32_t pi = &p - &points.front();
-        map[handl]  = pi;
+        map[handle]  = pi;
     }
 
     // triangle can not contain forbiden edge
@@ -69,7 +69,7 @@ Triangulation::Indices Triangulation::triangulate(const Points &   points,
         for (size_t i = 0; i < 3; ++i) pi[i] = map[face->vertex(i)];
 
         // Do not use triangles with opposit edges
-        if (!allow_opposit_edge) {
+        if (!allow_opposite_edge) {
             if (half_edges.find(std::make_pair(pi[1], pi[0])) != half_edges.end()) continue;
             if (half_edges.find(std::make_pair(pi[2], pi[1])) != half_edges.end()) continue;
             if (half_edges.find(std::make_pair(pi[0], pi[2])) != half_edges.end()) continue;
diff --git a/src/libslic3r/Triangulation.hpp b/src/libslic3r/Triangulation.hpp
index ccc08b52a6..ac847a8e4a 100644
--- a/src/libslic3r/Triangulation.hpp
+++ b/src/libslic3r/Triangulation.hpp
@@ -27,11 +27,11 @@ public:
     /// <param name="points">Points to connect</param>
     /// <param name="edges">Constraint for edges, pair is from point(first) to
     /// point(second)</param> 
-    /// <param name="allow_opposit_edge">Flag for filtration result indices by opposit half edge</param>
+    /// <param name="allow_opposite_edge">Flag for filtration result indices by opposit half edge</param>
     /// <returns>Triangles</returns>
     static Indices triangulate(const Points &   points,
                                const HalfEdges &half_edges,
-                               bool allow_opposit_edge = false);
+                               bool allow_opposite_edge = false);
     static Indices triangulate(const Polygon &polygon);
     static Indices triangulate(const Polygons &polygons);
     static Indices triangulate(const ExPolygons &expolygons);
diff --git a/src/slic3r/Utils/FontManager.cpp b/src/slic3r/Utils/FontManager.cpp
index d3751f0482..35767c8569 100644
--- a/src/slic3r/Utils/FontManager.cpp
+++ b/src/slic3r/Utils/FontManager.cpp
@@ -90,7 +90,7 @@ bool FontManager::load_font(size_t font_index)
 {
     if (font_index >= m_font_list.size()) return false;
     std::swap(font_index, m_font_selected);
-    bool is_loaded = load_activ_font();
+    bool is_loaded = load_active_font();
     if (!is_loaded) std::swap(font_index, m_font_selected);
     return is_loaded;
 }
@@ -113,7 +113,7 @@ static std::string get_file_name(const std::string &file_path)
     return file_path.substr(offset, count);
 }
 
-bool FontManager::load_activ_font()
+bool FontManager::load_active_font()
 { 
     return set_up_font_file(m_font_selected); 
 }
diff --git a/src/slic3r/Utils/FontManager.hpp b/src/slic3r/Utils/FontManager.hpp
index 4e99449122..93d183cbcf 100644
--- a/src/slic3r/Utils/FontManager.hpp
+++ b/src/slic3r/Utils/FontManager.hpp
@@ -169,7 +169,7 @@ private:
     // load actual selected font
     ImFont *load_imgui_font(size_t index, const std::string &text);
 
-    bool load_activ_font();
+    bool load_active_font();
 
     bool set_wx_font(size_t item_index, const wxFont &wx_font);