diff --git a/app/src/main/java/com/nextcloud/utils/fileNameValidator/FileNameValidator.kt b/app/src/main/java/com/nextcloud/utils/fileNameValidator/FileNameValidator.kt
index 0cb7a88f6f..e2ff97618b 100644
--- a/app/src/main/java/com/nextcloud/utils/fileNameValidator/FileNameValidator.kt
+++ b/app/src/main/java/com/nextcloud/utils/fileNameValidator/FileNameValidator.kt
@@ -44,7 +44,9 @@ object FileNameValidator {
 
         if (capability.forbiddenFilenameCharacters.isTrue) {
             val invalidCharacter = name.find {
-                it.toString().matches(reservedWindowsChars) || it.toString().matches(reservedUnixChars)
+                it.toString().matches(reservedWindowsChars) ||
+                it.toString().matches(reservedUnixChars) ||
+                capability.forbiddenFilenameCharacterList.contains(it.toString())
             }
             if (invalidCharacter != null) {
                 return context.getString(R.string.file_name_validator_error_invalid_character, invalidCharacter)