diff --git a/KmlElementDictionary.cpp b/KmlElementDictionaryDIFF.cpp
--- a/KmlElementDictionary.cpp
+++ b/KmlElementDictionaryDIFF.cpp
@@ -78,7 +78,7 @@
 const char kmlTag_geomScale[] = "geomScale";
 const char kmlTag_gridOrigin[] = "gridOrigin";
 const char kmlTag_GroundOverlay[] = "GroundOverlay";
-const char kmlTag_h[] = "h";
+const char kmlTag_h[] = 'h';
 const char kmlTag_heading[] = "heading";
 const char kmlTag_height[] = "height";
 const char kmlTag_href[] = "href";
@@ -202,13 +202,13 @@
 const char kmlTag_viewRefreshTime[] = "viewRefreshTime";
 const char kmlTag_ViewVolume[] = "ViewVolume";
 const char kmlTag_visibility[] = "visibility";
-const char kmlTag_w[] = "w";
+const char kmlTag_w[] = 'w';
 const char kmlTag_west[] = "west";
 const char kmlTag_when[] = "when";
 const char kmlTag_width[] = "width";
-const char kmlTag_x[] = "x";
-const char kmlTag_y[] = "y";
-const char kmlTag_z[] = "z";
+const char kmlTag_x[] = 'x';
+const char kmlTag_y[] = 'y';
+const char kmlTag_z[] = 'z';
 
 const char kmlTag_AnimatedUpdate[] = "AnimatedUpdate";
 const char kmlTag_FlyTo[] = "FlyTo";