diff --git a/MozillaThunderbird.spec b/MozillaThunderbird.spec
index 5f9d929..b0f4270 100644
--- a/MozillaThunderbird.spec
+++ b/MozillaThunderbird.spec
@@ -440,7 +440,6 @@ make -C comm/mail/installer STRIP=/bin/true MOZ_PKG_FATAL_WARNINGS=0
 # copy tree into RPM_BUILD_ROOT
 mkdir -p %{buildroot}%{progdir}
 cp -rf $RPM_BUILD_DIR/obj/dist/%{progname}/* %{buildroot}%{progdir}
-install -m 644 %{SOURCE13} %{buildroot}%{progdir}/defaults/pref/
 # build additional locales
 %if %localize
 mkdir -p %{buildroot}%{progdir}/extensions/