diff --git a/src/lxc/lxc_cgroup.h b/src/lxc/lxc_cgroup.h
index 8b32ca1ede..63e9e837b0 100644
--- a/src/lxc/lxc_cgroup.h
+++ b/src/lxc/lxc_cgroup.h
@@ -19,13 +19,12 @@
  * <http://www.gnu.org/licenses/>.
  */
 
-#ifndef LIBVIRT_LXC_CGROUP_H
-# define LIBVIRT_LXC_CGROUP_H
+#pragma once
 
-# include "vircgroup.h"
-# include "domain_conf.h"
-# include "lxc_fuse.h"
-# include "virusb.h"
+#include "vircgroup.h"
+#include "domain_conf.h"
+#include "lxc_fuse.h"
+#include "virusb.h"
 
 virCgroupPtr virLXCCgroupCreate(virDomainDefPtr def,
                                 pid_t initpid,
@@ -47,5 +46,3 @@ int
 virLXCTeardownHostUSBDeviceCgroup(virUSBDevicePtr dev,
                                   const char *path,
                                   void *opaque);
-
-#endif /* LIBVIRT_LXC_CGROUP_H */
diff --git a/src/lxc/lxc_conf.h b/src/lxc/lxc_conf.h
index d6a1f1ca10..dc5531ebf9 100644
--- a/src/lxc/lxc_conf.h
+++ b/src/lxc/lxc_conf.h
@@ -19,29 +19,28 @@
  * <http://www.gnu.org/licenses/>.
  */
 
-#ifndef LIBVIRT_LXC_CONF_H
-# define LIBVIRT_LXC_CONF_H
+#pragma once
 
-# include "internal.h"
-# include "libvirt_internal.h"
-# include "domain_conf.h"
-# include "domain_event.h"
-# include "capabilities.h"
-# include "virthread.h"
-# include "security/security_manager.h"
-# include "configmake.h"
-# include "vircgroup.h"
-# include "virsysinfo.h"
-# include "virusb.h"
-# include "virclosecallbacks.h"
-# include "virhostdev.h"
+#include "internal.h"
+#include "libvirt_internal.h"
+#include "domain_conf.h"
+#include "domain_event.h"
+#include "capabilities.h"
+#include "virthread.h"
+#include "security/security_manager.h"
+#include "configmake.h"
+#include "vircgroup.h"
+#include "virsysinfo.h"
+#include "virusb.h"
+#include "virclosecallbacks.h"
+#include "virhostdev.h"
 
-# define LXC_DRIVER_NAME "LXC"
+#define LXC_DRIVER_NAME "LXC"
 
-# define LXC_CONFIG_DIR SYSCONFDIR "/libvirt/lxc"
-# define LXC_STATE_DIR LOCALSTATEDIR "/run/libvirt/lxc"
-# define LXC_LOG_DIR LOCALSTATEDIR "/log/libvirt/lxc"
-# define LXC_AUTOSTART_DIR LXC_CONFIG_DIR "/autostart"
+#define LXC_CONFIG_DIR SYSCONFDIR "/libvirt/lxc"
+#define LXC_STATE_DIR LOCALSTATEDIR "/run/libvirt/lxc"
+#define LXC_LOG_DIR LOCALSTATEDIR "/log/libvirt/lxc"
+#define LXC_AUTOSTART_DIR LXC_CONFIG_DIR "/autostart"
 
 typedef struct _virLXCDriver virLXCDriver;
 typedef virLXCDriver *virLXCDriverPtr;
@@ -120,5 +119,3 @@ static inline void lxcDriverUnlock(virLXCDriverPtr driver)
 {
     virMutexUnlock(&driver->lock);
 }
-
-#endif /* LIBVIRT_LXC_CONF_H */
diff --git a/src/lxc/lxc_container.h b/src/lxc/lxc_container.h
index 240c79d5ac..94a6c5309c 100644
--- a/src/lxc/lxc_container.h
+++ b/src/lxc/lxc_container.h
@@ -18,29 +18,28 @@
  * <http://www.gnu.org/licenses/>.
  */
 
-#ifndef LIBVIRT_LXC_CONTAINER_H
-# define LIBVIRT_LXC_CONTAINER_H
+#pragma once
 
-# include "lxc_conf.h"
-# include "lxc_domain.h"
-# include "security/security_manager.h"
+#include "lxc_conf.h"
+#include "lxc_domain.h"
+#include "security/security_manager.h"
 
-# define LXC_DEV_MAJ_MEMORY  1
-# define LXC_DEV_MIN_NULL    3
-# define LXC_DEV_MIN_ZERO    5
-# define LXC_DEV_MIN_FULL    7
-# define LXC_DEV_MIN_RANDOM  8
-# define LXC_DEV_MIN_URANDOM 9
+#define LXC_DEV_MAJ_MEMORY  1
+#define LXC_DEV_MIN_NULL    3
+#define LXC_DEV_MIN_ZERO    5
+#define LXC_DEV_MIN_FULL    7
+#define LXC_DEV_MIN_RANDOM  8
+#define LXC_DEV_MIN_URANDOM 9
 
-# define LXC_DEV_MAJ_TTY     5
-# define LXC_DEV_MIN_TTY     0
-# define LXC_DEV_MIN_CONSOLE 1
-# define LXC_DEV_MIN_PTMX    2
+#define LXC_DEV_MAJ_TTY     5
+#define LXC_DEV_MIN_TTY     0
+#define LXC_DEV_MIN_CONSOLE 1
+#define LXC_DEV_MIN_PTMX    2
 
-# define LXC_DEV_MAJ_PTY     136
+#define LXC_DEV_MAJ_PTY     136
 
-# define LXC_DEV_MAJ_FUSE    10
-# define LXC_DEV_MIN_FUSE    229
+#define LXC_DEV_MAJ_FUSE    10
+#define LXC_DEV_MIN_FUSE    229
 
 int lxcContainerSendContinue(int control);
 int lxcContainerWaitForContinue(int control);
@@ -64,5 +63,3 @@ virArch lxcContainerGetAlt32bitArch(virArch arch);
 int lxcContainerChown(virDomainDefPtr def, const char *path);
 
 bool lxcIsBasicMountLocation(const char *path);
-
-#endif /* LIBVIRT_LXC_CONTAINER_H */
diff --git a/src/lxc/lxc_domain.h b/src/lxc/lxc_domain.h
index 2048481829..92ed4ac594 100644
--- a/src/lxc/lxc_domain.h
+++ b/src/lxc/lxc_domain.h
@@ -19,13 +19,12 @@
  * <http://www.gnu.org/licenses/>.
  */
 
-#ifndef LIBVIRT_LXC_DOMAIN_H
-# define LIBVIRT_LXC_DOMAIN_H
+#pragma once
 
-# include "vircgroup.h"
-# include "lxc_conf.h"
-# include "lxc_monitor.h"
-# include "virenum.h"
+#include "vircgroup.h"
+#include "lxc_conf.h"
+#include "lxc_monitor.h"
+#include "virenum.h"
 
 
 typedef enum {
@@ -113,5 +112,3 @@ virLXCDomainGetMachineName(virDomainDefPtr def, pid_t pid);
 int
 virLXCDomainSetRunlevel(virDomainObjPtr vm,
                         int runlevel);
-
-#endif /* LIBVIRT_LXC_DOMAIN_H */
diff --git a/src/lxc/lxc_driver.h b/src/lxc/lxc_driver.h
index 4af9bb966e..90549d02f2 100644
--- a/src/lxc/lxc_driver.h
+++ b/src/lxc/lxc_driver.h
@@ -18,10 +18,7 @@
  * <http://www.gnu.org/licenses/>.
  */
 
-#ifndef LIBVIRT_LXC_DRIVER_H
-# define LIBVIRT_LXC_DRIVER_H
+#pragma once
 
 /* Function declarations */
 int lxcRegister(void);
-
-#endif /* LIBVIRT_LXC_DRIVER_H */
diff --git a/src/lxc/lxc_fuse.h b/src/lxc/lxc_fuse.h
index 95285ae915..e9cfd9a20a 100644
--- a/src/lxc/lxc_fuse.h
+++ b/src/lxc/lxc_fuse.h
@@ -18,16 +18,15 @@
  * <http://www.gnu.org/licenses/>.
  */
 
-#ifndef LIBVIRT_LXC_FUSE_H
-# define LIBVIRT_LXC_FUSE_H
+#pragma once
 
-# define FUSE_USE_VERSION 26
+#define FUSE_USE_VERSION 26
 
-# if WITH_FUSE
-#  include <fuse.h>
-# endif
+#if WITH_FUSE
+# include <fuse.h>
+#endif
 
-# include "lxc_conf.h"
+#include "lxc_conf.h"
 
 struct virLXCMeminfo {
     unsigned long long memtotal;
@@ -56,5 +55,3 @@ typedef struct virLXCFuse *virLXCFusePtr;
 int lxcSetupFuse(virLXCFusePtr *f, virDomainDefPtr def);
 int lxcStartFuse(virLXCFusePtr f);
 void lxcFreeFuse(virLXCFusePtr *f);
-
-#endif /* LIBVIRT_LXC_FUSE_H */
diff --git a/src/lxc/lxc_hostdev.h b/src/lxc/lxc_hostdev.h
index 4fd8ce35d5..d2cdebddc8 100644
--- a/src/lxc/lxc_hostdev.h
+++ b/src/lxc/lxc_hostdev.h
@@ -19,11 +19,10 @@
  * <http://www.gnu.org/licenses/>.
  */
 
-#ifndef LIBVIRT_LXC_HOSTDEV_H
-# define LIBVIRT_LXC_HOSTDEV_H
+#pragma once
 
-# include "lxc_conf.h"
-# include "domain_conf.h"
+#include "lxc_conf.h"
+#include "domain_conf.h"
 
 int virLXCUpdateActiveUSBHostdevs(virLXCDriverPtr driver,
                                   virDomainDefPtr def);
@@ -37,5 +36,3 @@ int virLXCPrepareHostDevices(virLXCDriverPtr driver,
                              virDomainDefPtr def);
 void virLXCDomainReAttachHostDevices(virLXCDriverPtr driver,
                                      virDomainDefPtr def);
-
-#endif /* LIBVIRT_LXC_HOSTDEV_H */
diff --git a/src/lxc/lxc_monitor.h b/src/lxc/lxc_monitor.h
index fa47db7254..6d0944c301 100644
--- a/src/lxc/lxc_monitor.h
+++ b/src/lxc/lxc_monitor.h
@@ -18,12 +18,11 @@
  * <http://www.gnu.org/licenses/>.
  */
 
-#ifndef LIBVIRT_LXC_MONITOR_H
-# define LIBVIRT_LXC_MONITOR_H
+#pragma once
 
-# include "virobject.h"
-# include "domain_conf.h"
-# include "lxc_monitor_protocol.h"
+#include "virobject.h"
+#include "domain_conf.h"
+#include "lxc_monitor_protocol.h"
 
 typedef struct _virLXCMonitor virLXCMonitor;
 typedef virLXCMonitor *virLXCMonitorPtr;
@@ -59,5 +58,3 @@ void virLXCMonitorClose(virLXCMonitorPtr mon);
 
 void virLXCMonitorLock(virLXCMonitorPtr mon);
 void virLXCMonitorUnlock(virLXCMonitorPtr mon);
-
-#endif /* LIBVIRT_LXC_MONITOR_H */
diff --git a/src/lxc/lxc_native.h b/src/lxc/lxc_native.h
index 57725d3d2b..f16407f2e6 100644
--- a/src/lxc/lxc_native.h
+++ b/src/lxc/lxc_native.h
@@ -18,13 +18,12 @@
  * <http://www.gnu.org/licenses/>.
  */
 
-#ifndef LIBVIRT_LXC_NATIVE_H
-# define LIBVIRT_LXC_NATIVE_H
+#pragma once
 
-# include "domain_conf.h"
-# include "virenum.h"
+#include "domain_conf.h"
+#include "virenum.h"
 
-# define LXC_CONFIG_FORMAT "lxc-tools"
+#define LXC_CONFIG_FORMAT "lxc-tools"
 
 typedef enum {
     VIR_LXC_NETWORK_CONFIG_NAME,
@@ -46,5 +45,3 @@ VIR_ENUM_DECL(virLXCNetworkConfigEntry);
 virDomainDefPtr lxcParseConfigString(const char *config,
                                      virCapsPtr caps,
                                      virDomainXMLOptionPtr xmlopt);
-
-#endif /* LIBVIRT_LXC_NATIVE_H */
diff --git a/src/lxc/lxc_process.h b/src/lxc/lxc_process.h
index 7489a3a420..1bf359b229 100644
--- a/src/lxc/lxc_process.h
+++ b/src/lxc/lxc_process.h
@@ -19,10 +19,9 @@
  * <http://www.gnu.org/licenses/>.
  */
 
-#ifndef LIBVIRT_LXC_PROCESS_H
-# define LIBVIRT_LXC_PROCESS_H
+#pragma once
 
-# include "lxc_conf.h"
+#include "lxc_conf.h"
 
 int virLXCProcessStart(virConnectPtr conn,
                        virLXCDriverPtr  driver,
@@ -54,5 +53,3 @@ char *virLXCProcessSetupInterfaceTap(virDomainDefPtr vm,
 char *virLXCProcessSetupInterfaceDirect(virConnectPtr conn,
                                         virDomainDefPtr def,
                                         virDomainNetDefPtr net);
-
-#endif /* LIBVIRT_LXC_PROCESS_H */