diff --git a/.babelignore b/.babelignore
new file mode 100644
index 0000000000..ec46d9b5e8
--- /dev/null
+++ b/.babelignore
@@ -0,0 +1,2 @@
+test/fixtures
+lib
diff --git a/Makefile b/Makefile
index c3ea88785d..351fc07848 100644
--- a/Makefile
+++ b/Makefile
@@ -19,7 +19,7 @@ test-babel:
 	cd ./build/babel; \
 	jq "del(.nyc)" package.json > package.nonyc.json; \
 	mv -f package.nonyc.json package.json; \
-	../../node_modules/.bin/nyc --no-instrument --no-source-map --reporter=json --report-dir ../../coverage node_modules/mocha/bin/_mocha `scripts/_get-test-directories.sh` --opts test/mocha.opts --compilers js:../../scripts/test-babel-register.js; \
+	../../node_modules/.bin/nyc --no-instrument --no-source-map --reporter=json --report-dir ../../coverage node_modules/mocha/bin/_mocha `scripts/_get-test-directories.sh` --opts test/mocha.opts --compilers js:babel-register; \
 
 bootstrap-flow: clean
 	mkdir ./build
diff --git a/scripts/test-babel-register.js b/scripts/test-babel-register.js
deleted file mode 100644
index d70a3ff7ff..0000000000
--- a/scripts/test-babel-register.js
+++ /dev/null
@@ -1,10 +0,0 @@
-"use strict";
-
-const register = require("babel-register").default;
-
-register({
-  extensions: [".js"],
-  // Only js files in the test folder but not in the subfolder fixtures.
-  only: [/packages\/.+\/test\/(?!fixtures\/).+\.js$/],
-  compact: true,
-});