diff --git a/3rd/cjson/src/cJSONw.cpp b/3rd/cjson/src/cJSONw.cpp
index 0c0e1fe5..af3bf6aa 100644
--- a/3rd/cjson/src/cJSONw.cpp
+++ b/3rd/cjson/src/cJSONw.cpp
@@ -113,6 +113,12 @@ static PyObject* convert_cjson_to_python_object(const cJSON * const item, VM* vm
 
 void add_module_cjson(VM* vm){
     PyObject* mod = vm->new_module("cjson");
+
+    PK_LOCAL_STATIC cJSON_Hooks hooks;
+    hooks.malloc_fn = pool64_alloc;
+    hooks.free_fn = pool64_dealloc;
+    cJSON_InitHooks(&hooks);
+
     vm->bind_func<1>(mod, "loads", [](VM* vm, ArgsView args){
         const Str& string = CAST(Str&, args[0]);
         cJSON *json = cJSON_ParseWithLength(string.data, string.size);
diff --git a/cmake_build.py b/cmake_build.py
index 7046f0d5..16f9d727 100644
--- a/cmake_build.py
+++ b/cmake_build.py
@@ -7,11 +7,9 @@ if not os.path.exists("build"):
 
 os.chdir("build")
 
-code = os.system(r"""
-cmake .. -DPK_USE_CJSON=ON -DPK_USE_BOX2D=ON
-cmake --build . --config Release
-""")
-
+code = os.system("cmake .. -DPK_USE_CJSON=ON -DPK_USE_BOX2D=ON")
+assert code == 0
+code = os.system("cmake --build . --config Release")
 assert code == 0
 
 if sys.platform == "win32":