diff --git a/BUILD.md b/BUILD.md
index 7f99ff9254..1a6de519ac 100644
--- a/BUILD.md
+++ b/BUILD.md
@@ -297,7 +297,7 @@ are good enough. To avoid this dependency, build with support for loading
 custom terminfo at runtime, use
 
 ```sh
-make CMAKE_EXTRA_FLAGS="-DENABLE_UNIBILIUM=0" BUNDLED_CMAKE_FLAG="-DUSE_BUNDLED_UNIBILIUM=0"
+make CMAKE_EXTRA_FLAGS="-DENABLE_UNIBILIUM=0" DEPS_CMAKE_FLAGS="-DUSE_BUNDLED_UNIBILIUM=0"
 ```
 
 ### How to build static binary (on Linux)
@@ -341,7 +341,7 @@ cmake --build build
   ```
 - Example of using a package with some dependencies:
   ```
-  make BUNDLED_CMAKE_FLAG="-DUSE_BUNDLED=OFF -DUSE_BUNDLED_LUV=ON -DUSE_BUNDLED_TS=ON -DUSE_BUNDLED_LIBUV=ON"
+  make DEPS_CMAKE_FLAGS="-DUSE_BUNDLED=OFF -DUSE_BUNDLED_LUV=ON -DUSE_BUNDLED_TS=ON -DUSE_BUNDLED_LIBUV=ON"
   ```
 
 ## Build prerequisites
diff --git a/Makefile b/Makefile
index e0dbe962e7..68f94d50d3 100644
--- a/Makefile
+++ b/Makefile
@@ -77,6 +77,8 @@ DEPS_CMAKE_FLAGS ?=
 USE_BUNDLED ?=
 
 ifneq (,$(USE_BUNDLED))
+  # Note: BUNDLED_CMAKE_FLAG is only supported for back-compat. Don't
+  # mention it in docs. It is redundant with DEPS_CMAKE_FLAGS.
   BUNDLED_CMAKE_FLAG := -DUSE_BUNDLED=$(USE_BUNDLED)
 endif
 
diff --git a/runtime/doc/news.txt b/runtime/doc/news.txt
index d9382485c3..6cc3888446 100644
--- a/runtime/doc/news.txt
+++ b/runtime/doc/news.txt
@@ -159,7 +159,7 @@ BUILD
   the user's terminfo database won't be loaded and only internal definitions
   for the most common terminals are used. >
 
-  make distclean && make CMAKE_EXTRA_FLAGS="-DENABLE_UNIBILIUM=0" BUNDLED_CMAKE_FLAG="-DUSE_BUNDLED_UNIBILIUM=0"
+  make distclean && make CMAKE_EXTRA_FLAGS="-DENABLE_UNIBILIUM=0" DEPS_CMAKE_FLAGS"-DUSE_BUNDLED_UNIBILIUM=0"
 <
 DEFAULTS