diff --git a/apps/sample/hashing_2D/test_hash2D.cpp b/apps/sample/hashing_2D/test_hash2d.cpp
similarity index 100%
rename from apps/sample/hashing_2D/test_hash2D.cpp
rename to apps/sample/hashing_2D/test_hash2d.cpp
diff --git a/apps/sample/hashing_2D/test_hash2d.pro b/apps/sample/hashing_2D/test_hash2d.pro
index 8e5dd26a..7db83219 100644
--- a/apps/sample/hashing_2D/test_hash2d.pro
+++ b/apps/sample/hashing_2D/test_hash2d.pro
@@ -7,9 +7,9 @@ DEPENDPATH += .
 INCLUDEPATH += . ../../..
 CONFIG += console stl
 TEMPLATE = app
-HEADERS += ../../../vcg/space/index/index2D/grid_static_ptr_2d.h\
-           ../../../vcg/space/index/index2D/closest_2d.h\
-           ../../../vcg/space/index/index2D/space_iterators_2d.h\
-           ../../../vcg/space/index/index2D/grid_closest_2d.h
+HEADERS += ../../../vcg/space/index/index2d/grid_static_ptr_2d.h\
+           ../../../vcg/space/index/index2d/closest_2d.h\
+           ../../../vcg/space/index/index2d/space_iterators_2d.h\
+           ../../../vcg/space/index/index2d/grid_closest_2d.h
 
 SOURCES += test_hash2d.cpp