diff --git a/lib/std/Thread/Pool.zig b/lib/std/Thread/Pool.zig
index a96b4255e2003c3b6d23a2e73330ce5d0b33b215..516f06da0e2ef1b7eb18df5bc8f203bb75826e52 100644
--- a/lib/std/Thread/Pool.zig
+++ b/lib/std/Thread/Pool.zig
@@ -89,7 +89,7 @@ pub fn spawn(pool: *Pool, comptime func: anytype, args: anytype) !void {
 
         fn runFn(runnable: *Runnable) void {
             const run_node: *RunQueue.Node = @fieldParentPtr("data", runnable);
-            const closure: *@This() = @fieldParentPtr("run_node", run_node);
+            const closure: *@This() = @alignCast(@fieldParentPtr("run_node", run_node));
             @call(.auto, func, closure.arguments);
 
             // The thread pool's allocator is protected by the mutex.