diff --git a/3rd/libhv/src/WebSocketClient.cpp b/3rd/libhv/src/WebSocketClient.cpp
index 303bd025..45d0c0b7 100644
--- a/3rd/libhv/src/WebSocketClient.cpp
+++ b/3rd/libhv/src/WebSocketClient.cpp
@@ -3,6 +3,9 @@
 #include "pocketpy/pocketpy.h"
 #include "http/client/WebSocketClient.h"
 
+extern py_Name __new__;
+extern py_Name __init__;
+
 struct libhv_WebSocketClient {
     hv::WebSocketClient ws;
 
diff --git a/include/pocketpy/config.h b/include/pocketpy/config.h
index 75c4733c..6dbdedec 100644
--- a/include/pocketpy/config.h
+++ b/include/pocketpy/config.h
@@ -62,9 +62,9 @@
 
 // Hash table load factor (smaller ones mean less collision but more memory)
 // For class instance
-#define PK_INST_ATTR_LOAD_FACTOR    0.67
+#define PK_INST_ATTR_LOAD_FACTOR    0.67f
 // For class itself
-#define PK_TYPE_ATTR_LOAD_FACTOR    0.5
+#define PK_TYPE_ATTR_LOAD_FACTOR    0.5f
 
 #ifdef _WIN32
     #define PK_PLATFORM_SEP '\\'
diff --git a/src/modules/pkpy.c b/src/modules/pkpy.c
index 1edd036c..397f71d9 100644
--- a/src/modules/pkpy.c
+++ b/src/modules/pkpy.c
@@ -217,7 +217,8 @@ static bool ComputeThread__init__(int argc, py_Ref argv) {
 static bool ComputeThread_is_done(int argc, py_Ref argv) {
     PY_CHECK_ARGC(1);
     c11_ComputeThread* self = py_touserdata(argv);
-    py_newbool(py_retval(), atomic_load(&self->is_done));
+    bool value = atomic_load(&self->is_done);
+    py_newbool(py_retval(), value);
     return true;
 }