diff --git a/lib/core.ts b/lib/core.ts
index 74533cf6f..60556425f 100644
--- a/lib/core.ts
+++ b/lib/core.ts
@@ -98,7 +98,7 @@ export interface CurrentOptions {
   verbose?: boolean
   discriminator?: boolean
   unicodeRegExp?: boolean
-  useRe2?: boolean
+  useRE2?: boolean
   timestamp?: "string" | "date" // JTD only
   parseDate?: boolean // JTD only
   allowDate?: boolean // JTD only
@@ -221,7 +221,7 @@ type RequiredInstanceOptions = {
     | "validateFormats"
     | "int32range"
     | "unicodeRegExp"
-    | "useRe2"]: NonNullable<Options[K]>
+    | "useRE2"]: NonNullable<Options[K]>
 } & {code: InstanceCodeOptions}
 
 export type InstanceOptions = Options & RequiredInstanceOptions
@@ -250,7 +250,7 @@ function requiredOptions(o: Options): RequiredInstanceOptions {
     validateSchema: o.validateSchema ?? true,
     validateFormats: o.validateFormats ?? true,
     unicodeRegExp: o.unicodeRegExp ?? true,
-    useRe2: o.useRe2 ?? false,
+    useRE2: o.useRE2 ?? false,
     int32range: o.int32range ?? true,
   }
 }
diff --git a/lib/vocabularies/code.ts b/lib/vocabularies/code.ts
index c949ba404..7d56fea00 100644
--- a/lib/vocabularies/code.ts
+++ b/lib/vocabularies/code.ts
@@ -6,7 +6,7 @@ import {alwaysValidSchema, Type} from "../compile/util"
 import N from "../compile/names"
 import {useFunc} from "../compile/util"
 import re2 from "../runtime/re2"
-import * as Re2 from "re2"
+import * as RE2 from "re2"
 export function checkReportMissingProp(cxt: KeywordCxt, prop: string): void {
   const {gen, data, it} = cxt
   gen.if(noPropertyInData(gen, data, prop, it.opts.ownProperties), () => {
@@ -94,10 +94,10 @@ export function callValidateCode(
 
 export function usePattern({gen, it: {self, opts}}: KeywordCxt, pattern: string): Name {
   const u = opts.unicodeRegExp ? "u" : ""
-  const useRe2 = opts.useRe2
-  if (u === "u" && useRe2) {
+  const {useRE2} = opts
+  if (u === "u" && useRE2) {
     try {
-      const engine = new Re2(pattern)
+      const engine = new RE2(pattern)
       return gen.scopeValue("pattern", {
         key: pattern,
         ref: engine,
@@ -105,7 +105,7 @@ export function usePattern({gen, it: {self, opts}}: KeywordCxt, pattern: string)
       })
     } catch (e) {
       self.logger.log(
-        "Warning: Fallback to default regex engine. Please verify the safeness of your regex"
+        "Warning: One of the regexes in the schema is not supported by RE2. Falling back to the native regex engine"
       )
     }
   }