diff --git a/vm_core.h b/vm_core.h
index 8c44b2d018..4b7d946e1f 100644
--- a/vm_core.h
+++ b/vm_core.h
@@ -49,8 +49,17 @@
 #endif
 
 #ifndef ENABLE_VM_OBJSPACE
+#ifdef _WIN32
+/*
+ * TODO: object space independent st_table.
+ * socklist and conlist will be freed exit_handler(), after object
+ * space destruction.
+ */
+#define ENABLE_VM_OBJSPACE 0
+#else
 #define ENABLE_VM_OBJSPACE 1
 #endif
+#endif
 
 #include <setjmp.h>
 #include <signal.h>