--- a/AutoPanoSift.h
+++ b/AutoPanoSift.h
@@ -5,7 +5,7 @@
 #ifdef HAS_CONFIG_H
 #include "config.h"
 #else
-#define PACKAGE_VERSION "2.5.1"
+#define PACKAGE_VERSION "2.5.2"
 #endif
 
 // include windows.h here
@@ -29,13 +29,8 @@
 # endif
 #endif 
 
-#ifdef HAS_PANO13
 #include "pano13/filter.h"
 #include "pano13/panorama.h"
-#else
-#include "pano12/filter.h"
-#include "pano12/panorama.h"
-#endif
 #include "math.h"