diff --git a/js/src/vm/HelperThreads.cpp b/js/src/vm/HelperThreads.cpp
index ca5b3020a5..6d86db53d6 100644
--- a/js/src/vm/HelperThreads.cpp
+++ b/js/src/vm/HelperThreads.cpp
@@ -927,11 +927,7 @@ GlobalHelperThreadState::maxParseThreads() const
     if (IsHelperThreadSimulatingOOM(js::oom::THREAD_TYPE_PARSE))
         return 1;
 
-    // Don't allow simultaneous off thread parses, to reduce contention on the
-    // atoms table. Note that wasm compilation depends on this to avoid
-    // stalling the helper thread, as off thread parse tasks can trigger and
-    // block on other off thread wasm compilation tasks.
-    return 1;
+    return threadCount;
 }
 
 size_t