diff --git a/thoth-export-server/src/marc21/marc21record_thoth.rs b/thoth-export-server/src/marc21/marc21record_thoth.rs
index 3dc8c350..71b32ca1 100644
--- a/thoth-export-server/src/marc21/marc21record_thoth.rs
+++ b/thoth-export-server/src/marc21/marc21record_thoth.rs
@@ -634,7 +634,6 @@ impl Marc21Field<Marc21RecordThoth> for WorkIssues {
                 .and_then(|f| {
                     f.add_subfield(b"v", format!("vol. {}.", self.issue_ordinal).as_bytes())
                 })
-                .and_then(|f| f.add_subfield(b"x", self.series.issn_digital.as_deref().unwrap_or_default().as_bytes()))
                 .and_then(|f| {
                     f.add_subfield(
                         b"x",
@@ -656,8 +655,8 @@ impl Marc21Field<Marc21RecordThoth> for WorkIssues {
                     )
                 })
                 .and_then(|f| builder.add_field(f))?;
-            }
-            Ok(())
+          }
+          Ok(())
     }
 }