diff --git a/build/docs.sh b/build/docs.sh
index e1425bba..57f4098a 100755
--- a/build/docs.sh
+++ b/build/docs.sh
@@ -34,5 +34,5 @@ if [ $MODE == "docs" ]
 then
 	# Build paper.js library for documentation
 	./preprocess.sh stripped ../src/paper.js ../dist/docs/resources/js/paper.js\
-		"-DBROWSER"
+		'{ "browser": true }'
 fi