diff --git a/simgear/scene/sky/clouds3d/.cvsignore b/simgear/scene/sky/clouds3d/.cvsignore
new file mode 100644
index 00000000..e9955884
--- /dev/null
+++ b/simgear/scene/sky/clouds3d/.cvsignore
@@ -0,0 +1,3 @@
+.deps
+Makefile
+Makefile.in
diff --git a/src-libs/.cvsignore b/src-libs/.cvsignore
new file mode 100644
index 00000000..282522db
--- /dev/null
+++ b/src-libs/.cvsignore
@@ -0,0 +1,2 @@
+Makefile
+Makefile.in