diff --git a/source/eventcore/drivers/posix/driver.d b/source/eventcore/drivers/posix/driver.d
index 15e9e95..5dd4f0a 100644
--- a/source/eventcore/drivers/posix/driver.d
+++ b/source/eventcore/drivers/posix/driver.d
@@ -265,13 +265,14 @@ package class PosixEventLoop {
 
 	package void clearFD(FD fd)
 	{
-		if (m_fds[fd.value].common.userDataDestructor)
-			() @trusted { m_fds[fd.value].common.userDataDestructor(m_fds[fd.value].common.userData.ptr); } ();
-		if (!(m_fds[fd.value].common.flags & FDFlags.internal))
-			foreach (cb; m_fds[fd.value].common.callback)
+		auto slot = () @trusted { return &m_fds[fd.value]; } ();
+		if (slot.common.userDataDestructor)
+			() @trusted { slot.common.userDataDestructor(slot.common.userData.ptr); } ();
+		if (!(slot.common.flags & FDFlags.internal))
+			foreach (cb; slot.common.callback)
 				if (cb !is null)
 					m_waiterCount--;
-		m_fds[fd.value] = m_fds.FullField.init;
+		*slot = m_fds.FullField.init;
 	}
 }
 
diff --git a/source/eventcore/drivers/posix/sockets.d b/source/eventcore/drivers/posix/sockets.d
index c3d4413..57abd22 100644
--- a/source/eventcore/drivers/posix/sockets.d
+++ b/source/eventcore/drivers/posix/sockets.d
@@ -803,10 +803,11 @@ final class PosixEventDriverSockets(Loop : PosixEventLoop) : EventDriverSockets
 	final override bool releaseRef(SocketFD fd)
 	{
 		import taggedalgebraic : hasType;
-		assert(m_loop.m_fds[fd].common.refCount > 0, "Releasing reference to unreferenced socket FD.");
+		auto slot = () @trusted { return &m_loop.m_fds[fd]; } ();
+		assert(slot.common.refCount > 0, "Releasing reference to unreferenced socket FD.");
 		// listening sockets have an incremented the reference count because of setNotifyCallback
-		int base_refcount = m_loop.m_fds[fd].specific.hasType!StreamListenSocketSlot ? 1 : 0;
-		if (--m_loop.m_fds[fd].common.refCount == base_refcount) {
+		int base_refcount = slot.specific.hasType!StreamListenSocketSlot ? 1 : 0;
+		if (--slot.common.refCount == base_refcount) {
 			m_loop.unregisterFD(fd, EventMask.read|EventMask.write|EventMask.status);
 			m_loop.clearFD(fd);
 			closeSocket(cast(sock_t)fd);