diff --git a/extra/nodejs/build b/extra/nodejs/build
index 8e94e1b5..cf85684f 100755
--- a/extra/nodejs/build
+++ b/extra/nodejs/build
@@ -1,5 +1,8 @@
 #!/bin/sh -e
 
+# Fix a python 3 incompatibility.
+sed -i 's|/ (8|// (8|' tools/gyp/pylib/gyp/generator/ninja.py
+
 ./configure \
     --shared-zlib \
     --without-intl \