diff --git a/CMakeLists.txt b/CMakeLists.txt
index a39d3f5..e4e5bf8 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -19,7 +19,7 @@ if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang" OR "${CMAKE_CXX_COMPILER_ID}" ST
   set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -std=c++11 -L${CMAKE_INSTALL_PREFIX}/lib")
 endif ()
 
-file (GLOB_RECURSE sources src/*.cpp src/*.h src/win32/*.rc)
+file (GLOB_RECURSE sources src/*.cxx src/*.h src/win32/*.rc)
 file (GLOB_RECURSE po      resources/po/*.po)
 if (MINGW)
   file (GLOB_RECURSE rc src/win32/*.rc)
diff --git a/src/action.cpp b/src/action.cxx
similarity index 100%
rename from src/action.cpp
rename to src/action.cxx
diff --git a/src/arrange.cpp b/src/arrange.cxx
similarity index 100%
rename from src/arrange.cpp
rename to src/arrange.cxx
diff --git a/src/blupi.cpp b/src/blupi.cxx
similarity index 100%
rename from src/blupi.cpp
rename to src/blupi.cxx
diff --git a/src/button.cpp b/src/button.cxx
similarity index 100%
rename from src/button.cpp
rename to src/button.cxx
diff --git a/src/chemin.cpp b/src/chemin.cxx
similarity index 100%
rename from src/chemin.cpp
rename to src/chemin.cxx
diff --git a/src/decblupi.cpp b/src/decblupi.cxx
similarity index 100%
rename from src/decblupi.cpp
rename to src/decblupi.cxx
diff --git a/src/decgoal.cpp b/src/decgoal.cxx
similarity index 100%
rename from src/decgoal.cpp
rename to src/decgoal.cxx
diff --git a/src/decio.cpp b/src/decio.cxx
similarity index 100%
rename from src/decio.cpp
rename to src/decio.cxx
diff --git a/src/decmap.cpp b/src/decmap.cxx
similarity index 100%
rename from src/decmap.cpp
rename to src/decmap.cxx
diff --git a/src/decmove.cpp b/src/decmove.cxx
similarity index 100%
rename from src/decmove.cpp
rename to src/decmove.cxx
diff --git a/src/decor.cpp b/src/decor.cxx
similarity index 100%
rename from src/decor.cpp
rename to src/decor.cxx
diff --git a/src/decstat.cpp b/src/decstat.cxx
similarity index 100%
rename from src/decstat.cpp
rename to src/decstat.cxx
diff --git a/src/event.cpp b/src/event.cxx
similarity index 100%
rename from src/event.cpp
rename to src/event.cxx
diff --git a/src/fifo.cpp b/src/fifo.cxx
similarity index 100%
rename from src/fifo.cpp
rename to src/fifo.cxx
diff --git a/src/fog.cpp b/src/fog.cxx
similarity index 100%
rename from src/fog.cpp
rename to src/fog.cxx
diff --git a/src/jauge.cpp b/src/jauge.cxx
similarity index 100%
rename from src/jauge.cpp
rename to src/jauge.cxx
diff --git a/src/menu.cpp b/src/menu.cxx
similarity index 100%
rename from src/menu.cpp
rename to src/menu.cxx
diff --git a/src/misc.cpp b/src/misc.cxx
similarity index 100%
rename from src/misc.cpp
rename to src/misc.cxx
diff --git a/src/movie.cpp b/src/movie.cxx
similarity index 100%
rename from src/movie.cpp
rename to src/movie.cxx
diff --git a/src/obstacle.cpp b/src/obstacle.cxx
similarity index 100%
rename from src/obstacle.cpp
rename to src/obstacle.cxx
diff --git a/src/pixmap.cpp b/src/pixmap.cxx
similarity index 100%
rename from src/pixmap.cpp
rename to src/pixmap.cxx
diff --git a/src/sound.cpp b/src/sound.cxx
similarity index 100%
rename from src/sound.cpp
rename to src/sound.cxx
diff --git a/src/text.cpp b/src/text.cxx
similarity index 100%
rename from src/text.cpp
rename to src/text.cxx