diff --git a/src/lib/alsa/NonBlock.cxx b/src/lib/alsa/NonBlock.cxx
index 66f291cae..a9e8f0506 100644
--- a/src/lib/alsa/NonBlock.cxx
+++ b/src/lib/alsa/NonBlock.cxx
@@ -42,13 +42,13 @@ AlsaNonBlockPcm::DispatchSockets(MultiSocketMonitor &m,
 
 	auto *i = pfds;
 	m.ForEachReturnedEvent([&i, end](SocketDescriptor s, unsigned events){
-			if (i >= end)
-				return;
+		if (i >= end)
+			return;
 
-			i->fd = s.Get();
-			i->events = i->revents = events;
-			++i;
-		});
+		i->fd = s.Get();
+		i->events = i->revents = events;
+		++i;
+	});
 
 	unsigned short dummy;
 	int err = snd_pcm_poll_descriptors_revents(pcm, pfds, i - pfds, &dummy);
@@ -87,13 +87,13 @@ AlsaNonBlockMixer::DispatchSockets(MultiSocketMonitor &m,
 
 	auto *i = pfds;
 	m.ForEachReturnedEvent([&i, end](SocketDescriptor s, unsigned events){
-			if (i >= end)
-				return;
+		if (i >= end)
+			return;
 
-			i->fd = s.Get();
-			i->events = i->revents = events;
-			++i;
-		});
+		i->fd = s.Get();
+		i->events = i->revents = events;
+		++i;
+	});
 
 	unsigned short dummy;
 	snd_mixer_poll_descriptors_revents(mixer, pfds, i - pfds, &dummy);
diff --git a/src/lib/alsa/NonBlock.hxx b/src/lib/alsa/NonBlock.hxx
index 5d27e5d14..7c8eade59 100644
--- a/src/lib/alsa/NonBlock.hxx
+++ b/src/lib/alsa/NonBlock.hxx
@@ -1,8 +1,7 @@
 // SPDX-License-Identifier: GPL-2.0-or-later
 // Copyright The Music Player Daemon Project
 
-#ifndef MPD_ALSA_NON_BLOCK_HXX
-#define MPD_ALSA_NON_BLOCK_HXX
+#pragma once
 
 #include "event/Chrono.hxx"
 #include "util/ReusableArray.hxx"
@@ -51,5 +50,3 @@ public:
 	 */
 	void DispatchSockets(MultiSocketMonitor &m, snd_mixer_t *mixer) noexcept;
 };
-
-#endif