diff --git a/mozilla/tools/buildbot-configs/testing/unittest/CLOBBER/firefox/TRUNK/macosx/CLOBBER b/mozilla/tools/buildbot-configs/testing/unittest/CLOBBER/firefox/TRUNK/macosx/CLOBBER
new file mode 100644
index 00000000000..6fc38bac4a1
--- /dev/null
+++ b/mozilla/tools/buildbot-configs/testing/unittest/CLOBBER/firefox/TRUNK/macosx/CLOBBER
@@ -0,0 +1 @@
+Initial CLOBBER file
diff --git a/mozilla/tools/buildbot-configs/testing/unittest/CLOBBER/firefox/TRUNK/win2k3/CLOBBER b/mozilla/tools/buildbot-configs/testing/unittest/CLOBBER/firefox/TRUNK/win2k3/CLOBBER
new file mode 100644
index 00000000000..6fc38bac4a1
--- /dev/null
+++ b/mozilla/tools/buildbot-configs/testing/unittest/CLOBBER/firefox/TRUNK/win2k3/CLOBBER
@@ -0,0 +1 @@
+Initial CLOBBER file
diff --git a/mozilla/tools/buildbot-configs/testing/unittest/CLOBBER/firefox/TRUNK/winxp/CLOBBER b/mozilla/tools/buildbot-configs/testing/unittest/CLOBBER/firefox/TRUNK/winxp/CLOBBER
new file mode 100644
index 00000000000..6fc38bac4a1
--- /dev/null
+++ b/mozilla/tools/buildbot-configs/testing/unittest/CLOBBER/firefox/TRUNK/winxp/CLOBBER
@@ -0,0 +1 @@
+Initial CLOBBER file