1 files changed, 2 insertions, 2 deletions

diff --git a/README.md b/README.md
index f37a767..97c6d5b 100644
--- a/README.md
+++ b/README.md
@@ -14,8 +14,8 @@ $ autoreconf --install
 ## Optionally setting environment values
 
 ```sh
-$ export NDK=/opt/android-ndk-r19
-$ export TOOLCHAIN=$NDK/toolchains/llvm/prebuilt/linux-x86_64
+$ export ANDROID_NDK_ROOT=/opt/android-ndk-r19
+$ export TOOLCHAIN=$ANDROID_NDK_ROOT/toolchains/llvm/prebuilt/linux-x86_64
 ```
 
 and then