diff --git a/cppapi/server/dintrthread.h b/cppapi/server/dintrthread.h
index dbcb5c98d..d99428d49 100644
--- a/cppapi/server/dintrthread.h
+++ b/cppapi/server/dintrthread.h
@@ -58,7 +58,7 @@ struct _ShDevIntrTh
 	bool			cmd_pending;	// The new command flag
 	DevIntrCmdCode	cmd_code;		// The command code
 	bool			th_running;		// Thread running flag
-	#if _MSC_VER > 1900
+	#if _MSC_VER >= 1900
 	#ifdef interface
 	#undef interface
 	#endif