diff --git a/client/src/pages/home/filters.jsx b/client/src/pages/home/filters.jsx
index 3455e9d0..02f92187 100644
--- a/client/src/pages/home/filters.jsx
+++ b/client/src/pages/home/filters.jsx
@@ -27,7 +27,6 @@ export default function Filters({ sendQuery }) {
     if (searchParams.size === 0) {
       setSearchParams({
         affiliations: [],
-        affiliationsToExclude: [],
         affiliationsToInclude: [],
         dataIdentifiers: identifiers,
         datasources: sources.map((source) => source.key),
@@ -38,7 +37,6 @@ export default function Filters({ sendQuery }) {
     } else {
       setCurrentSearchParams({
         affiliations: searchParams.getAll('affiliations'),
-        affiliationsToExclude: searchParams.getAll('affiliationsToExclude'),
         affiliationsToInclude: searchParams.getAll('affiliationsToInclude'),
         dataIdentifiers: searchParams.getAll('dataIdentifiers'),
         datasources: searchParams.getAll('datasources'),
@@ -113,28 +111,16 @@ export default function Filters({ sendQuery }) {
       </Row>
       {
         currentSearchParams.moreOptions && (
-          <>
-            <Row gutters>
-              <Col n="5">
-                <TagInput
-                  hint="All these affiliations must be present, AND operator"
-                  label="Affiliations to include mandatory"
-                  onTagsChange={(affiliationsToInclude) => setSearchParams({ ...currentSearchParams, affiliationsToInclude })}
-                  tags={currentSearchParams.affiliationsToInclude}
-                />
-              </Col>
-            </Row>
-            <Row gutters>
-              <Col n="5">
-                <TagInput
-                  hint="None of these affiliations must be present, AND operator"
-                  label="Affiliations to exclude"
-                  onTagsChange={(affiliationsToExclude) => setSearchParams({ ...currentSearchParams, affiliationsToExclude })}
-                  tags={currentSearchParams.affiliationsToExclude}
-                />
-              </Col>
-            </Row>
-          </>
+          <Row gutters>
+            <Col n="5">
+              <TagInput
+                hint="All these affiliations must be present, AND operator"
+                label="Affiliations to include mandatory"
+                onTagsChange={(affiliationsToInclude) => setSearchParams({ ...currentSearchParams, affiliationsToInclude })}
+                tags={currentSearchParams.affiliationsToInclude}
+              />
+            </Col>
+          </Row>
         )
       }
       <Row gutters alignItems="bottom">
diff --git a/client/src/pages/home/index.jsx b/client/src/pages/home/index.jsx
index 7e0d94c3..a0011980 100644
--- a/client/src/pages/home/index.jsx
+++ b/client/src/pages/home/index.jsx
@@ -55,21 +55,18 @@ const getRorAffiliations = (affiliations) => {
 const getData = async (options) => {
   const promises = [getBsoPublications({ options, index: VITE_BSO_PUBLICATIONS_INDEX })];
   const { notRorAffiliations, rorAffiliations } = getRorAffiliations(options.affiliations);
-  const { notRorAffiliations: notRorAffiliationsToExclude, rorAffiliations: rorAffiliationsToExclude } = getRorAffiliations(options.affiliationsToExclude);
   const { notRorAffiliations: notRorAffiliationsToInclude, rorAffiliations: rorAffiliationsToInclude } = getRorAffiliations(options.affiliationsToInclude);
-  if (notRorAffiliations.length || notRorAffiliationsToExclude.length || notRorAffiliationsToInclude.length) {
+  if (notRorAffiliations.length || notRorAffiliationsToInclude.length) {
     promises.push(getOpenAlexPublications({
       ...options,
       affiliations: notRorAffiliations,
-      affiliationsToExclude: notRorAffiliationsToExclude,
       affiliationsToInclude: notRorAffiliationsToInclude,
     }, false));
   }
-  if (rorAffiliations.length || rorAffiliationsToExclude.length || rorAffiliationsToInclude.length) {
+  if (rorAffiliations.length || rorAffiliationsToInclude.length) {
     promises.push(getOpenAlexPublications({
       ...options,
       affiliations: rorAffiliations,
-      affiliationsToExclude: rorAffiliationsToExclude,
       affiliationsToInclude: rorAffiliationsToInclude,
     }, true));
   }
diff --git a/client/src/utils/works.js b/client/src/utils/works.js
index e16e648d..fee44aca 100644
--- a/client/src/utils/works.js
+++ b/client/src/utils/works.js
@@ -18,9 +18,6 @@ const getBsoQuery = (options, pit, searchAfter) => {
   options.affiliations.forEach((affiliation) => {
     query.query.bool.should.push({ multi_match: { fields: affiliationsFields, query: `"${affiliation}"`, operator: 'and' } });
   });
-  options.affiliationsToExclude.forEach((affiliationToExclude) => {
-    query.query.bool.must_not.push({ multi_match: { fields: affiliationsFields, query: affiliationToExclude, operator: 'and' } });
-  });
   options.affiliationsToInclude.forEach((affiliationToInclude) => {
     query.query.bool.must.push({ multi_match: { fields: affiliationsFields, query: `"${affiliationToInclude}"`, operator: 'and' } });
   });
@@ -212,16 +209,14 @@ const getOpenAlexPublications = (options, isRor = false, page = '1', previousRes
   } else if (options?.endYear) {
     url += `,publication_year:-${Number(options.endYear)}`;
   }
-  if (options.affiliations.length || options.affiliationsToExclude.length || options.affiliationsToInclude.length) {
+  if (options.affiliations.length || options.affiliationsToInclude.length) {
     if (isRor) {
       url += '';
       if (options.affiliations.length) url += `,institutions.ror:${options.affiliations.join('|')}`;
-      if (options.affiliationsToExclude.length) url += options.affiliationsToExclude.map((affiliation) => `,institutions.ror:!${affiliation}`).join('');
       if (options.affiliationsToInclude.length) url += options.affiliationsToInclude.map((affiliation) => `,institutions.ror:${affiliation}`).join('');
     } else {
       url += ',raw_affiliation_string.search:';
       if (options.affiliations.length) url += `(${options.affiliations.map((aff) => `"${aff}"`).join(' OR ')})`;
-      if (options.affiliationsToExclude.length) url += `${options.affiliationsToExclude.map((aff) => ` AND NOT ${aff}`).join('')}`;
       if (options.affiliationsToInclude.length) url += `${options.affiliationsToInclude.map((aff) => ` AND "${aff}"`).join('')}`;
     }
   }