diff --git a/src/internal/ntapi_impl.h b/src/internal/ntapi_impl.h
index beb72a6..deba32c 100644
--- a/src/internal/ntapi_impl.h
+++ b/src/internal/ntapi_impl.h
@@ -42,7 +42,7 @@
 #endif
 
 #ifndef __NT_IPC_PAGES
-#define __NT_IPC_PAGES			64
+#define __NT_IPC_PAGES			512
 #endif
 /* user-defined options: tail */