diff --git a/src/css/common.css b/src/css/common.css
index 415b13efb..1a8ba0b34 100644
--- a/src/css/common.css
+++ b/src/css/common.css
@@ -218,6 +218,11 @@ label:hover .checkbox:not([disabled]) {
 .checkbox[disabled] ~ span {
     filter: var(--checkbox-disabled-filter);
     }
+.checkbox.partial > input[type="checkbox"]:checked + svg {
+    background-color: var(--surface-1);
+    border-color: var(--checkbox-checked-ink);
+    stroke: var(--checkbox-checked-ink);
+    }
 
 .radio {
     --margin-end: calc(var(--font-size) * 0.75);
diff --git a/src/js/3p-filters.js b/src/js/3p-filters.js
index 98fc477dd..2f1cd92cd 100644
--- a/src/js/3p-filters.js
+++ b/src/js/3p-filters.js
@@ -400,9 +400,10 @@ const toggleFilterList = (elem, on, ui = false) => {
 const updateListNode = listNode => {
     if ( listNode === null ) { return; }
     if ( listNode.dataset.role !== 'node' ) { return; }
-    const listLeaves = qsa$(listNode, '.listEntry[data-role="leaf"].checked');
+    const checkedListLeaves = qsa$(listNode, '.listEntry[data-role="leaf"].checked');
+    const allListLeaves = qsa$(listNode, '.listEntry[data-role="leaf"]');
     dom.text(qs$(listNode, '.nodestats'),
-        renderNodeStats(listLeaves.length, qsa$(listNode, '.listEntry[data-role="leaf"]').length)
+        renderNodeStats(checkedListLeaves.length, allListLeaves.length)
     );
     dom.cl.toggle(listNode, 'searchMatch',
         qs$(listNode, ':scope > .listEntries > .listEntry.searchMatch') !== null
@@ -413,7 +414,7 @@ const updateListNode = listNode => {
     let isCached = false;
     let isObsolete = false;
     let writeTime = 0;
-    for ( const listLeaf of listLeaves ) {
+    for ( const listLeaf of checkedListLeaves ) {
         const listkey = listLeaf.dataset.key;
         const listDetails = listsetDetails.available[listkey];
         usedFilterCount += listDetails.off ? 0 : listDetails.entryUsedCount || 0;
@@ -423,8 +424,15 @@ const updateListNode = listNode => {
         isObsolete = isObsolete || dom.cl.has(listLeaf, 'obsolete');
         writeTime = Math.max(writeTime, assetCache.writeTime || 0);
     }
-    dom.cl.toggle(listNode, 'checked', listLeaves.length !== 0);
-    dom.prop(qs$(listNode, ':scope > .detailbar input'), 'checked', listLeaves.length !== 0);
+    dom.cl.toggle(listNode, 'checked', checkedListLeaves.length !== 0);
+    dom.cl.toggle(qs$(listNode, ':scope > .detailbar .checkbox'),
+        'partial',
+        checkedListLeaves.length !== allListLeaves.length
+    );
+    dom.prop(qs$(listNode, ':scope > .detailbar input'),
+        'checked',
+        checkedListLeaves.length !== 0
+    );
     dom.text(qs$(listNode, '.leafstats'),
         renderLeafStats(usedFilterCount, totalFilterCount)
     );