diff --git a/graphics/nxwidgets/src/cgraphicsport.cxx b/graphics/nxwidgets/src/cgraphicsport.cxx
index 755bb126d..3c3b1a83b 100644
--- a/graphics/nxwidgets/src/cgraphicsport.cxx
+++ b/graphics/nxwidgets/src/cgraphicsport.cxx
@@ -983,7 +983,7 @@ void CGraphicsPort::greyScale(nxgl_coord_t x, nxgl_coord_t y,
 /**
  * Invert colors in a region.  NOTE:  This allocates an in-memory
  * buffer the size of one row in graphic memory.  So it may only be
- * useful for inverting small regions and its only current use of for
+ * useful for inverting small regions and its only current use is for
  * the inverted cursor text.
  *
  * @param x X coordinate of the region to change.
diff --git a/include/graphics/nxwidgets/cgraphicsport.hxx b/include/graphics/nxwidgets/cgraphicsport.hxx
index bc893caeb..8bf9aed25 100644
--- a/include/graphics/nxwidgets/cgraphicsport.hxx
+++ b/include/graphics/nxwidgets/cgraphicsport.hxx
@@ -469,7 +469,7 @@ namespace NXWidgets
     /**
      * Invert colors in a region.  NOTE:  This allocates an in-memory
      * buffer the size of one row in graphic memory.  So it may only be
-     * useful for inverting small regions and its only current use of for
+     * useful for inverting small regions and its only current use is for
      * the inverted cursor text.
      *
      * @param x X coordinate of the region to change.