diff --git a/build-osx.sh b/build-osx.sh
index 9c1ebfe6..3f651490 100755
--- a/build-osx.sh
+++ b/build-osx.sh
@@ -25,3 +25,8 @@ cpack
 # run tests
 ./light/testlight || exit 1
 ./qbsp/testqbsp || exit 1
+
+# test id1 maps for leaks
+cd ..
+cd testmaps/quake_map_source
+PATH=../../$BUILD_DIR/qbsp ./leaktest.sh || exit 1