diff --git a/opencti-platform/opencti-graphql/src/utils/syntax.js b/opencti-platform/opencti-graphql/src/utils/syntax.js
index 817c862a07f8..fcec243d19e2 100644
--- a/opencti-platform/opencti-graphql/src/utils/syntax.js
+++ b/opencti-platform/opencti-graphql/src/utils/syntax.js
@@ -135,7 +135,7 @@ export const cleanupIndicatorPattern = (patternType, pattern) => {
 };
 
 export const systemChecker = /^\d{0,10}$/;
-export const domainChecker = /^(?:(?:[\p{L}\d_]+\.?)*[\p{L}\d_]+\.)?[\p{L}\d]+(?:\.[\p{L}]{2,})?$/u;
+export const domainChecker = /^(?:(?:[\p{L}\d_-]+\.)*[\p{L}\d_-]+\.)?[\p{L}\d-]+(?:\.[\p{L}]{2,})?$/u;
 export const hostnameChecker = /^(([a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9\-_]*[a-zA-Z0-9])\.)*([A-Za-z0-9]|[A-Za-z0-9][A-Za-z0-9\-_]*[A-Za-z0-9])$/;
 export const emailChecker = /^[a-zA-Z0-9.!#$%&'*+/=?^_`{|}~-]+@[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*$/;
 export const ipv6Checker = /^(([0-9a-fA-F]{1,4}:){7,7}[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,7}:|([0-9a-fA-F]{1,4}:){1,6}:[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,5}(:[0-9a-fA-F]{1,4}){1,2}|([0-9a-fA-F]{1,4}:){1,4}(:[0-9a-fA-F]{1,4}){1,3}|([0-9a-fA-F]{1,4}:){1,3}(:[0-9a-fA-F]{1,4}){1,4}|([0-9a-fA-F]{1,4}:){1,2}(:[0-9a-fA-F]{1,4}){1,5}|[0-9a-fA-F]{1,4}:((:[0-9a-fA-F]{1,4}){1,6})|:((:[0-9a-fA-F]{1,4}){1,7}|:)|fe80:(:[0-9a-fA-F]{0,4}){0,4}%[0-9a-zA-Z]{1,}|::(ffff(:0{1,4}){0,1}:){0,1}((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])|([0-9a-fA-F]{1,4}:){1,4}:((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9]))(?:\/([0-9]|[1-9][0-9]|1[0-1][0-9]|12[0-8]))?$/;
diff --git a/opencti-platform/opencti-graphql/tests/01-unit/utils/syntax-test.ts b/opencti-platform/opencti-graphql/tests/01-unit/utils/syntax-test.ts
index 2172e6ae3eac..8bf94e125d5c 100644
--- a/opencti-platform/opencti-graphql/tests/01-unit/utils/syntax-test.ts
+++ b/opencti-platform/opencti-graphql/tests/01-unit/utils/syntax-test.ts
@@ -14,6 +14,8 @@ describe('Regex Pattern Tests', () => {
     expect('løveskateboards.com').toMatch(domainChecker);
     expect('test._mysubdomain.mydomain.com').toMatch(domainChecker);
     expect('test_mysubdomain.domain.io').toMatch(domainChecker);
+    expect('test-test.com').toMatch(domainChecker);
+    expect('test-test.mytest.com').toMatch(domainChecker);
     expect('invalid_domain.12_3').not.toMatch(domainChecker);
     expect('invalid_domain').not.toMatch(domainChecker);
   });