1 files changed, 6 insertions, 0 deletions

diff --git a/server/helpers/custom-validators/plugins.ts b/server/helpers/custom-validators/plugins.ts
index 2fcdc581f..4ab5f9ce8 100644
--- a/server/helpers/custom-validators/plugins.ts
+++ b/server/helpers/custom-validators/plugins.ts
@@ -4,6 +4,7 @@ import { PluginType } from '../../../shared/models/plugins/plugin.type'
 import { CONSTRAINTS_FIELDS } from '../../initializers/constants'
 import { PluginPackageJson } from '../../../shared/models/plugins/plugin-package-json.model'
 import { isUrlValid } from './activitypub/misc'
+import { isThemeRegistered } from '../../lib/plugins/theme-utils'
 
 const PLUGINS_CONSTRAINTS_FIELDS = CONSTRAINTS_FIELDS.PLUGINS
 
@@ -61,6 +62,10 @@ function isCSSPathsValid (css: any[]) {
   return isArray(css) && css.every(c => isSafePath(c))
 }
 
+function isThemeValid (name: string) {
+  return isPluginNameValid(name) && isThemeRegistered(name)
+}
+
 function isPackageJSONValid (packageJSON: PluginPackageJson, pluginType: PluginType) {
   return isNpmPluginNameValid(packageJSON.name) &&
     isPluginDescriptionValid(packageJSON.description) &&
@@ -82,6 +87,7 @@ function isLibraryCodeValid (library: any) {
 export {
   isPluginTypeValid,
   isPackageJSONValid,
+  isThemeValid,
   isPluginVersionValid,
   isPluginNameValid,
   isPluginDescriptionValid,