diff --git a/src/FxEngine/math/coord.cpp b/src/FxEngine/math/coord.c
similarity index 100%
rename from src/FxEngine/math/coord.cpp
rename to src/FxEngine/math/coord.c
diff --git a/src/FxEngine/object/coordtable.cpp b/src/FxEngine/object/coordtable.c
similarity index 100%
rename from src/FxEngine/object/coordtable.cpp
rename to src/FxEngine/object/coordtable.c
diff --git a/src/FxEngine/object/face.cpp b/src/FxEngine/object/face.c
similarity index 100%
rename from src/FxEngine/object/face.cpp
rename to src/FxEngine/object/face.c
diff --git a/src/FxEngine/object/facetable.cpp b/src/FxEngine/object/facetable.c
similarity index 100%
rename from src/FxEngine/object/facetable.cpp
rename to src/FxEngine/object/facetable.c
diff --git a/src/FxEngine/object/object.cpp b/src/FxEngine/object/object.c
similarity index 100%
rename from src/FxEngine/object/object.cpp
rename to src/FxEngine/object/object.c
diff --git a/src/FxEngine/object/texture.cpp b/src/FxEngine/object/texture.c
similarity index 100%
rename from src/FxEngine/object/texture.cpp
rename to src/FxEngine/object/texture.c
diff --git a/src/FxEngine/zbuffer/zbuffer.cpp b/src/FxEngine/zbuffer/zbuffer.c
similarity index 100%
rename from src/FxEngine/zbuffer/zbuffer.cpp
rename to src/FxEngine/zbuffer/zbuffer.c
diff --git a/src/main.cpp b/src/main.c
similarity index 100%
rename from src/main.cpp
rename to src/main.c