diff --git a/VisualCard/Parsers/VcardParserTools.cs b/VisualCard/Parsers/VcardParserTools.cs
index 427dde9..cae297f 100644
--- a/VisualCard/Parsers/VcardParserTools.cs
+++ b/VisualCard/Parsers/VcardParserTools.cs
@@ -180,6 +180,7 @@ internal static string GetPrefixFromPartsArrayEnum(PartsArrayEnum partsArrayEnum
                 PartsArrayEnum.Telephones => VcardConstants._telephoneSpecifier,
                 PartsArrayEnum.Addresses => VcardConstants._addressSpecifier,
                 PartsArrayEnum.Labels => VcardConstants._labelSpecifier,
+                PartsArrayEnum.Agents => VcardConstants._agentSpecifier,
                 PartsArrayEnum.Mails => VcardConstants._emailSpecifier,
                 PartsArrayEnum.Organizations => VcardConstants._orgSpecifier,
                 PartsArrayEnum.Titles => VcardConstants._titleSpecifier,