diff --git a/xs/src/libslic3r/Model.cpp b/xs/src/libslic3r/Model.cpp
index 78590c6a4..8b8706464 100644
--- a/xs/src/libslic3r/Model.cpp
+++ b/xs/src/libslic3r/Model.cpp
@@ -867,7 +867,7 @@ ModelObject::transform_by_instance(ModelInstance instance, bool dont_translate)
     /*
       Let:
         * I1 be the trafo of the given instance, 
-        * V the originial volume trafo and
+        * V the original volume trafo and
         * I2 the trafo of the instance to be updated
       
       Then:
diff --git a/xs/src/libslic3r/TransformationMatrix.cpp b/xs/src/libslic3r/TransformationMatrix.cpp
index 4561f3b23..0542294d8 100644
--- a/xs/src/libslic3r/TransformationMatrix.cpp
+++ b/xs/src/libslic3r/TransformationMatrix.cpp
@@ -26,7 +26,7 @@ TransformationMatrix::TransformationMatrix(const std::vector<double> &entries_ro
     if (entries_row_maj.size() != 12)
     {
         *this = TransformationMatrix();
-        CONFESS("Invalid number of entries when initalizing TransformationMatrix. Vector length must be 12.");
+        CONFESS("Invalid number of entries when initializing TransformationMatrix. Vector length must be 12.");
         return;
     }
     m00 = entries_row_maj[0];   m01 = entries_row_maj[1];   m02 = entries_row_maj[2];   m03 = entries_row_maj[3];
diff --git a/xs/src/libslic3r/TransformationMatrix.hpp b/xs/src/libslic3r/TransformationMatrix.hpp
index ef0e3422a..94b216677 100644
--- a/xs/src/libslic3r/TransformationMatrix.hpp
+++ b/xs/src/libslic3r/TransformationMatrix.hpp
@@ -101,7 +101,7 @@ public:
     /// generates a translation matrix
     static TransformationMatrix mat_translation(const Vectorf3 &vector);
 
-    /// generates a rotation matrix around coodinate axis
+    /// generates a rotation matrix around coordinate axis
     static TransformationMatrix mat_rotation(double angle_rad, const Axis &axis);
 
     /// generates a rotation matrix around arbitrary axis