diff --git a/src/runtime/node/rsaes.ts b/src/runtime/node/rsaes.ts
index e9eb3be9bc..7462097054 100644
--- a/src/runtime/node/rsaes.ts
+++ b/src/runtime/node/rsaes.ts
@@ -1,4 +1,6 @@
 import { KeyObject, publicEncrypt, constants, privateDecrypt } from 'node:crypto'
+import { deprecate } from 'node:util'
+
 import type { RsaEsDecryptFunction, RsaEsEncryptFunction } from '../interfaces.d'
 import checkKeyLength from './check_key_length.js'
 import { isCryptoKey } from './webcrypto.js'
@@ -14,6 +16,11 @@ const checkKey = (key: KeyObject, alg: string) => {
   checkKeyLength(key, alg)
 }
 
+const RSA1_5 = deprecate(
+  () => constants.RSA_PKCS1_PADDING,
+  'The RSA1_5 "alg" (JWE Algorithm) is deprecated and will be removed in the next major revision.',
+)
+
 const resolvePadding = (alg: string) => {
   switch (alg) {
     case 'RSA-OAEP':
@@ -22,7 +29,7 @@ const resolvePadding = (alg: string) => {
     case 'RSA-OAEP-512':
       return constants.RSA_PKCS1_OAEP_PADDING
     case 'RSA1_5':
-      return constants.RSA_PKCS1_PADDING
+      return RSA1_5()
     default:
       return undefined
   }