diff --git a/client/common/configuration/elements/templates/channel-configuration.ts b/client/common/configuration/elements/templates/channel-configuration.ts
index 93be5857..293af21d 100644
--- a/client/common/configuration/elements/templates/channel-configuration.ts
+++ b/client/common/configuration/elements/templates/channel-configuration.ts
@@ -10,6 +10,7 @@ import type { DynamicFormHeader, DynamicFormSchema } from '../../../lib/elements
 import { ptTr } from '../../../lib/directives/translation'
 import { html, TemplateResult } from 'lit'
 import { classMap } from 'lit/directives/class-map.js'
+import { noDuplicateMaxDelay, forbidSpecialCharsMaxTolerance } from 'shared/lib/constants'
 
 export function tplChannelConfiguration (el: ChannelConfigurationElement): TemplateResult {
   const tableHeaderList: Record<string, DynamicFormHeader> = {
@@ -381,7 +382,7 @@ export function tplChannelConfiguration (el: ChannelConfigurationElement): Templ
                       )
                     )}
                     min="0"
-                    max="10"
+                    max="${forbidSpecialCharsMaxTolerance}"
                     id="peertube-livechat-forbid-special-chars-tolerance"
                     aria-describedby="peertube-livechat-forbid-special-chars-tolerance-feedback"
                     @input=${(event: InputEvent) => {
@@ -501,7 +502,7 @@ export function tplChannelConfiguration (el: ChannelConfigurationElement): Templ
                       )
                     )}
                     min="0"
-                    max="10"
+                    max="${noDuplicateMaxDelay.toString()}"
                     id="peertube-livechat-no-duplicate-delay"
                     aria-describedby="peertube-livechat-no-duplicate-delay-feedback"
                     @input=${(event: InputEvent) => {
diff --git a/client/common/configuration/services/channel-details.ts b/client/common/configuration/services/channel-details.ts
index 69e4d79f..d372ca7f 100644
--- a/client/common/configuration/services/channel-details.ts
+++ b/client/common/configuration/services/channel-details.ts
@@ -11,7 +11,7 @@ import type {
 import { ValidationError, ValidationErrorType } from '../../lib/models/validation'
 import { getBaseRoute } from '../../../utils/uri'
 import { maxEmojisPerChannel } from 'shared/lib/emojis'
-import { channelTermsMaxLength } from 'shared/lib/constants'
+import { channelTermsMaxLength, noDuplicateMaxDelay, forbidSpecialCharsMaxTolerance } from 'shared/lib/constants'
 
 export class ChannelDetailsService {
   public _registerClientOptions: RegisterClientOptions
@@ -83,7 +83,7 @@ export class ChannelDetailsService {
           propertiesError['bot.forbidSpecialChars.tolerance'].push(ValidationErrorType.WrongType)
         } else if (
           forbidSpecialCharsTolerance < 0 ||
-          forbidSpecialCharsTolerance > 10
+          forbidSpecialCharsTolerance > forbidSpecialCharsMaxTolerance
         ) {
           propertiesError['bot.forbidSpecialChars.tolerance'].push(ValidationErrorType.NotInRange)
         }
@@ -98,7 +98,7 @@ export class ChannelDetailsService {
           propertiesError['bot.noDuplicate.delay'].push(ValidationErrorType.WrongType)
         } else if (
           noDuplicateDelay < 0 ||
-          noDuplicateDelay > 24 * 3600
+          noDuplicateDelay > noDuplicateMaxDelay
         ) {
           propertiesError['bot.noDuplicate.delay'].push(ValidationErrorType.NotInRange)
         }
diff --git a/server/lib/configuration/channel/sanitize.ts b/server/lib/configuration/channel/sanitize.ts
index ded2a78e..f9559c7c 100644
--- a/server/lib/configuration/channel/sanitize.ts
+++ b/server/lib/configuration/channel/sanitize.ts
@@ -4,7 +4,13 @@
 
 import type { RegisterServerOptions } from '@peertube/peertube-types'
 import type { ChannelConfigurationOptions } from '../../../../shared/lib/types'
-import { channelTermsMaxLength } from '../../../../shared/lib/constants'
+import {
+  channelTermsMaxLength,
+  forbidSpecialCharsMaxTolerance,
+  forbidSpecialCharsDefaultTolerance,
+  noDuplicateDefaultDelay,
+  noDuplicateMaxDelay
+} from '../../../../shared/lib/constants'
 
 /**
  * Sanitize data so that they can safely be used/stored for channel configuration configuration.
@@ -53,7 +59,7 @@ async function sanitizeChannelConfigurationOptions (
   botData.forbidSpecialChars ??= {
     enabled: false,
     reason: '',
-    tolerance: 0,
+    tolerance: forbidSpecialCharsDefaultTolerance,
     applyToModerators: false
   }
   if (!_assertObjectType(botData.forbidSpecialChars)) {
@@ -64,7 +70,7 @@ async function sanitizeChannelConfigurationOptions (
   botData.noDuplicate ??= {
     enabled: false,
     reason: '',
-    delay: 60,
+    delay: noDuplicateDefaultDelay,
     applyToModerators: false
   }
   if (!_assertObjectType(botData.noDuplicate)) {
@@ -272,7 +278,7 @@ async function _readForbidSpecialChars (
   const result: ChannelConfigurationOptions['bot']['forbidSpecialChars'] = {
     enabled: _readBoolean(botData.forbidSpecialChars, 'enabled'),
     reason: _readSimpleInput(botData.forbidSpecialChars, 'reason'),
-    tolerance: _readInteger(botData.forbidSpecialChars, 'tolerance', 0, 10),
+    tolerance: _readInteger(botData.forbidSpecialChars, 'tolerance', 0, forbidSpecialCharsMaxTolerance),
     applyToModerators: _readBoolean(botData.forbidSpecialChars, 'applyToModerators')
   }
   return result
@@ -287,7 +293,7 @@ async function _readNoDuplicate (
   const result: ChannelConfigurationOptions['bot']['noDuplicate'] = {
     enabled: _readBoolean(botData.noDuplicate, 'enabled'),
     reason: _readSimpleInput(botData.noDuplicate, 'reason'),
-    delay: _readInteger(botData.noDuplicate, 'delay', 0, 24 * 3600),
+    delay: _readInteger(botData.noDuplicate, 'delay', 0, noDuplicateMaxDelay),
     applyToModerators: _readBoolean(botData.noDuplicate, 'applyToModerators')
   }
   return result
diff --git a/server/lib/configuration/channel/storage.ts b/server/lib/configuration/channel/storage.ts
index cf9cce34..b3439434 100644
--- a/server/lib/configuration/channel/storage.ts
+++ b/server/lib/configuration/channel/storage.ts
@@ -7,6 +7,10 @@ import type { ChannelConfigurationOptions } from '../../../../shared/lib/types'
 import type { ChannelCommonRoomConf } from '../../configuration/bot'
 import { RoomChannel } from '../../room-channel'
 import { sanitizeChannelConfigurationOptions } from '../../configuration/channel/sanitize'
+import {
+  forbidSpecialCharsDefaultTolerance,
+  noDuplicateDefaultDelay
+} from '../../../../shared/lib/constants'
 import * as fs from 'fs'
 import * as path from 'path'
 
@@ -47,13 +51,13 @@ function getDefaultChannelConfigurationOptions (_options: RegisterServerOptions)
       forbidSpecialChars: {
         enabled: false,
         reason: '',
-        tolerance: 0,
+        tolerance: forbidSpecialCharsDefaultTolerance,
         applyToModerators: false
       },
       noDuplicate: {
         enabled: false,
         reason: '',
-        delay: 60,
+        delay: noDuplicateDefaultDelay,
         applyToModerators: false
       },
       quotes: [],
diff --git a/shared/lib/constants.ts b/shared/lib/constants.ts
index af4fabc9..3c6d90a8 100644
--- a/shared/lib/constants.ts
+++ b/shared/lib/constants.ts
@@ -3,3 +3,9 @@
 // SPDX-License-Identifier: AGPL-3.0-only
 
 export const channelTermsMaxLength = 400
+
+export const forbidSpecialCharsDefaultTolerance = 0
+export const forbidSpecialCharsMaxTolerance = 10
+
+export const noDuplicateMaxDelay = 86400
+export const noDuplicateDefaultDelay = 60