diff --git a/tools/build/options/WITHOUT_FAST_DEPEND b/tools/build/options/WITHOUT_FAST_DEPEND
new file mode 100644
index 000000000000..2e6ca4424fc5
--- /dev/null
+++ b/tools/build/options/WITHOUT_FAST_DEPEND
@@ -0,0 +1,5 @@
+.\" $FreeBSD$
+Set to use the historical
+.Xr mkdep 1
+for the "make depend" phase of the build.
+This option is deprecated and will be removed soon.