diff --git a/src/Base/Matrix.h b/src/Base/Matrix.h
index 63ac6db79..36444c667 100644
--- a/src/Base/Matrix.h
+++ b/src/Base/Matrix.h
@@ -134,9 +134,9 @@ public:
   /// transform (move,scale,rotate) around a point
   void transform    (const Vector3f& rclVct, const Matrix4D& rclMtrx);
   void transform    (const Vector3d& rclVct, const Matrix4D& rclMtrx);
-  /// Matrix is expected to have a 3x3 rotation matrix.
+  /// Matrix is expected to have a 3x3 rotation submatrix.
   void inverse      (void);
-  /// Matrix is expected to have a 3x3 rotation matrix.
+  /// Matrix is expected to have a 3x3 rotation submatrix.
   void inverseOrthogonal(void);
   /// Arbitrary, non-singular matrix
   void inverseGauss (void);