diff --git a/platform/chromium/manifest.json b/platform/chromium/manifest.json
index c84d5707ed9a7..b43a9e5b7be1f 100644
--- a/platform/chromium/manifest.json
+++ b/platform/chromium/manifest.json
@@ -2,7 +2,7 @@
     "manifest_version": 2,
 
     "name": "uBlock Origin",
-    "version": "1.15.6",
+    "version": "1.15.8",
 
     "commands": {
         "launch-element-zapper": {
diff --git a/src/js/traffic.js b/src/js/traffic.js
index 42900ef47c412..2ed04abad4b94 100644
--- a/src/js/traffic.js
+++ b/src/js/traffic.js
@@ -707,7 +707,10 @@ var filterDocument = (function() {
         //   confirmed, there is nothing which can be done uBO-side to reduce
         //   overhead.
         if ( filterer.buffer === null ) {
-            if ( streamJobDone(filterer, ev.data) ) { return; }
+            if ( streamJobDone(filterer, ev.data) ) {
+                filterers.delete(this);
+                return;
+            }
             filterer.buffer = new Uint8Array(ev.data);
             return;
         }