diff --git a/lib/jwt.service.spec.ts b/lib/jwt.service.spec.ts
index 253d6540..39b33905 100644
--- a/lib/jwt.service.spec.ts
+++ b/lib/jwt.service.spec.ts
@@ -343,7 +343,7 @@ describe('JWT Service', () => {
         // @ts-expect-error
         jwtService.sign(testPayloadStr, { expiresIn: 60 })
       ).toThrowError(
-        'Not allowed payload as string with these sign options: expiresIn'
+        'Payload as string is not allowed with the following sign options: expiresIn'
       );
     });
 
@@ -352,7 +352,7 @@ describe('JWT Service', () => {
         // @ts-expect-error
         jwtService.signAsync(testPayloadStr, { notBefore: 60 })
       ).toThrowError(
-        'Not allowed payload as string with these sign options: expiresIn, notBefore'
+        'Payload as string is not allowed with the following sign options: expiresIn, notBefore'
       );
     });
 
@@ -368,13 +368,13 @@ describe('JWT Service', () => {
 
     it('should "sign" expect errors using "payload" string with already defined invalid sign options', () => {
       expect(() => jwtService.sign(testPayloadStr)).toThrowError(
-        'Not allowed payload as string with these sign options: expiresIn'
+        'Payload as string is not allowed with the following sign options: expiresIn'
       );
     });
 
     it('should "signAsync" expect errors using "payload" string with already defined invalid sign options', () => {
       expect(() => jwtService.signAsync(testPayloadStr)).toThrowError(
-        'Not allowed payload as string with these sign options: expiresIn'
+        'Payload as string is not allowed with the following sign options: expiresIn'
       );
     });
   });
diff --git a/lib/jwt.service.ts b/lib/jwt.service.ts
index 7db54ac4..5d688c7f 100644
--- a/lib/jwt.service.ts
+++ b/lib/jwt.service.ts
@@ -42,7 +42,7 @@ export class JwtService {
       signOptKeys.some((k) => !allowedSignOptKeys.includes(k))
     ) {
       throw new Error(
-        'Not allowed payload as string with these sign options: ' +
+        'Payload as string is not allowed with the following sign options: ' +
           signOptKeys.join(', ')
       );
     }
@@ -80,7 +80,7 @@ export class JwtService {
       signOptKeys.some((k) => !allowedSignOptKeys.includes(k))
     ) {
       throw new Error(
-        'Not allowed payload as string with these sign options: ' +
+        'Payload as string is not allowed with the following sign options: ' +
           signOptKeys.join(', ')
       );
     }