diff --git a/src/validation/Validator.ts b/src/validation/Validator.ts
index 006a367..f3ee629 100644
--- a/src/validation/Validator.ts
+++ b/src/validation/Validator.ts
@@ -24,6 +24,7 @@ import { ValidationError } from "..";
 const ensurePatternRegExp = (pattern: string | RegExp): RegExp => {
   if (typeof pattern === "string") {
     const re = pattern
+      .replace(/\\/g, "\\\\")
       .replace(/\./g, "\\.")
       .replace(/\*/g, "[^.]+")
       .replace(/\[\]/g, ".?\\[\\d+\\]");