diff --git a/src/main/java/org/jabref/gui/entryeditor/OtherFieldsTab.java b/src/main/java/org/jabref/gui/entryeditor/OtherFieldsTab.java
index 5f4ca318ec2..33b35573a18 100644
--- a/src/main/java/org/jabref/gui/entryeditor/OtherFieldsTab.java
+++ b/src/main/java/org/jabref/gui/entryeditor/OtherFieldsTab.java
@@ -37,6 +37,7 @@ protected Collection<String> determineFieldsToShow(BibEntry entry, EntryType ent
                 .filter(field -> !allKnownFields.contains(field)).collect(Collectors.toList());
 
         otherFields.removeAll(entryType.getDeprecatedFields());
+        otherFields.removeAll(entryType.getOptionalFields());
         otherFields.remove(BibEntry.KEY_FIELD);
         otherFields.removeAll(customTabFieldNames);
         return otherFields;