diff --git a/src/ThreadPool.zig b/src/ThreadPool.zig
index 9e0ff02..1d0123b 100644
--- a/src/ThreadPool.zig
+++ b/src/ThreadPool.zig
@@ -335,8 +335,12 @@ fn unregister(noalias self: *ThreadPool, noalias maybe_thread: ?*Thread) void {
 
 fn join(self: *ThreadPool) void {
     // Wait for the thread pool to be shutdown() then for all threads to enter a joinable state
-    self.join_event.wait();
-    const sync: Sync = @bitCast(self.sync.load(.monotonic));
+    var sync: Sync = @bitCast(self.sync.load(.monotonic));
+    if (!(sync.state == .shutdown and sync.spawned == 0)) {
+        self.join_event.wait();
+        sync = @bitCast(self.sync.load(.monotonic));
+    }
+
     assert(sync.state == .shutdown);
     assert(sync.spawned == 0);