diff --git a/qbsp/CMakeLists.txt b/qbsp/CMakeLists.txt
index 767ba174..6caed906 100644
--- a/qbsp/CMakeLists.txt
+++ b/qbsp/CMakeLists.txt
@@ -12,27 +12,27 @@ set(QBSP_INCLUDES
 set(QBSP_SOURCES
 	${CMAKE_SOURCE_DIR}/common/threads.c
 	${CMAKE_SOURCE_DIR}/common/log.c
-	brush.c
-	bspfile.c
-	cmdlib.c
-	csg4.c
-	file.c
-	globals.c
-	map.c
-	mathlib.c
-	merge.c
-	outside.c
-	parser.c
-	portals.c
+	brush.cc
+	bspfile.cc
+	cmdlib.cc
+	csg4.cc
+	file.cc
+	globals.cc
+	map.cc
+	mathlib.cc
+	merge.cc
+	outside.cc
+	parser.cc
+	portals.cc
 	qbsp.cc
-	solidbsp.c
-	surfaces.c
-	tjunc.c
-	util.c
-	wad.c
-	winding.c
-	writebsp.c
-	exportobj.c
+	solidbsp.cc
+	surfaces.cc
+	tjunc.cc
+	util.cc
+	wad.cc
+	winding.cc
+	writebsp.cc
+	exportobj.cc
 	${QBSP_INCLUDES})
 
 add_definitions(-DDOUBLEVEC_T)
diff --git a/qbsp/brush.c b/qbsp/brush.cc
similarity index 100%
rename from qbsp/brush.c
rename to qbsp/brush.cc
diff --git a/qbsp/bspfile.c b/qbsp/bspfile.cc
similarity index 100%
rename from qbsp/bspfile.c
rename to qbsp/bspfile.cc
diff --git a/qbsp/cmdlib.c b/qbsp/cmdlib.cc
similarity index 100%
rename from qbsp/cmdlib.c
rename to qbsp/cmdlib.cc
diff --git a/qbsp/csg4.c b/qbsp/csg4.cc
similarity index 100%
rename from qbsp/csg4.c
rename to qbsp/csg4.cc
diff --git a/qbsp/exportobj.c b/qbsp/exportobj.cc
similarity index 100%
rename from qbsp/exportobj.c
rename to qbsp/exportobj.cc
diff --git a/qbsp/file.c b/qbsp/file.cc
similarity index 100%
rename from qbsp/file.c
rename to qbsp/file.cc
diff --git a/qbsp/globals.c b/qbsp/globals.cc
similarity index 100%
rename from qbsp/globals.c
rename to qbsp/globals.cc
diff --git a/qbsp/map.c b/qbsp/map.cc
similarity index 100%
rename from qbsp/map.c
rename to qbsp/map.cc
diff --git a/qbsp/mathlib.c b/qbsp/mathlib.cc
similarity index 100%
rename from qbsp/mathlib.c
rename to qbsp/mathlib.cc
diff --git a/qbsp/merge.c b/qbsp/merge.cc
similarity index 100%
rename from qbsp/merge.c
rename to qbsp/merge.cc
diff --git a/qbsp/outside.c b/qbsp/outside.cc
similarity index 100%
rename from qbsp/outside.c
rename to qbsp/outside.cc
diff --git a/qbsp/parser.c b/qbsp/parser.cc
similarity index 100%
rename from qbsp/parser.c
rename to qbsp/parser.cc
diff --git a/qbsp/portals.c b/qbsp/portals.cc
similarity index 100%
rename from qbsp/portals.c
rename to qbsp/portals.cc
diff --git a/qbsp/solidbsp.c b/qbsp/solidbsp.cc
similarity index 100%
rename from qbsp/solidbsp.c
rename to qbsp/solidbsp.cc
diff --git a/qbsp/surfaces.c b/qbsp/surfaces.cc
similarity index 100%
rename from qbsp/surfaces.c
rename to qbsp/surfaces.cc
diff --git a/qbsp/tjunc.c b/qbsp/tjunc.cc
similarity index 100%
rename from qbsp/tjunc.c
rename to qbsp/tjunc.cc
diff --git a/qbsp/util.c b/qbsp/util.cc
similarity index 100%
rename from qbsp/util.c
rename to qbsp/util.cc
diff --git a/qbsp/wad.c b/qbsp/wad.cc
similarity index 100%
rename from qbsp/wad.c
rename to qbsp/wad.cc
diff --git a/qbsp/winding.c b/qbsp/winding.cc
similarity index 100%
rename from qbsp/winding.c
rename to qbsp/winding.cc
diff --git a/qbsp/writebsp.c b/qbsp/writebsp.cc
similarity index 100%
rename from qbsp/writebsp.c
rename to qbsp/writebsp.cc