diff --git a/CMakeLists.txt b/CMakeLists.txt
index 01a845fd9..ac92c9394 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -16,12 +16,16 @@ project(chiapos C CXX ASM)
 # CMake 3.14+
 include(FetchContent)
 
+if (${CMAKE_SYSTEM_NAME} MATCHES "FreeBSD")
+include(${CMAKE_INSTALL_PREFIX}/share/cmake/pybind11/pybind11Config.cmake)
+else()
 FetchContent_Declare(
   pybind11-src
   GIT_REPOSITORY https://github.com/pybind/pybind11.git
   GIT_TAG        v2.6.2
 )
 FetchContent_MakeAvailable(pybind11-src)
+endif()
 
 FetchContent_Declare(
   cxxopts
diff --git a/hellman_example/Makefile b/hellman_example/Makefile
new file mode 100644
index 000000000..e44416fad
--- /dev/null
+++ b/hellman_example/Makefile
@@ -0,0 +1,14 @@
+all: HellmanAttacks
+
+OBJ = aes.o bits.o calculate_bucket.o cxxopts.o encoding.o hellman.o picosha2.o plotter_disk.o pos_constants.o prover_disk.o sort_on_disk.o util.o verifier.o
+
+.SUFFIXES:.hpp .o
+
+.hpp.o:
+	$(CC) -c $(CXXFLAGS) $(DFLAGS) $(INCLUDES) $< -o $@
+
+HellmanAttacks: ${OBJ}
+	${CC} -o HellmanAttacks ${OBJ}
+
+clean:
+	rm -f HellmanAttacks ${OBJ}
diff --git a/setup.py b/setup.py
index d30252519..94d96cd13 100644
--- a/setup.py
+++ b/setup.py
@@ -209,7 +209,7 @@ def build_extensions(self):
         python_requires=">=3.7",
         long_description=open("README.md").read(),
         long_description_content_type="text/markdown",
-        url="https://github.com/Chia-Network/chiavdf",
+        url="https://github.com/Chia-Network/chiapos",
         ext_modules=[CMakeExtension("chiapos", ".")],
         cmdclass=dict(build_ext=CMakeBuild),
         zip_safe=False,