diff --git a/build.sh b/build.sh
index 8432fbb..fa99a88 100644
--- a/build.sh
+++ b/build.sh
@@ -1,4 +1,4 @@
-g++ -shared -fPIC \
+g++ -DBOOST_DEBUG_PYTHON -shared -fPIC \
     -I/usr/include/python3.10 -I/usr/include/python3.10/numpy -I./include \
     -L./lib -L/usr/lib/x86_64-linux-gnu \
     -DRTC_NUMPY_IMPL \