diff --git a/include/fpu/softfloat-helpers.h b/include/fpu/softfloat-helpers.h
index 34f4cf92ae..a98d759cd3 100644
--- a/include/fpu/softfloat-helpers.h
+++ b/include/fpu/softfloat-helpers.h
@@ -48,8 +48,8 @@ this code that are retained.
 ===============================================================================
 */
 
-#ifndef _SOFTFLOAT_HELPERS_H_
-#define _SOFTFLOAT_HELPERS_H_
+#ifndef SOFTFLOAT_HELPERS_H
+#define SOFTFLOAT_HELPERS_H
 
 #include "fpu/softfloat-types.h"
 
diff --git a/include/hw/usb/dwc2-regs.h b/include/hw/usb/dwc2-regs.h
index 40af23a0ba..a7eb531485 100644
--- a/include/hw/usb/dwc2-regs.h
+++ b/include/hw/usb/dwc2-regs.h
@@ -39,8 +39,8 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef __DWC2_HW_H__
-#define __DWC2_HW_H__
+#ifndef DWC2_HW_H
+#define DWC2_HW_H
 
 #define HSOTG_REG(x)	(x)
 
diff --git a/include/hw/usb/xlnx-usb-subsystem.h b/include/hw/usb/xlnx-usb-subsystem.h
index 739bef7f45..999e423951 100644
--- a/include/hw/usb/xlnx-usb-subsystem.h
+++ b/include/hw/usb/xlnx-usb-subsystem.h
@@ -22,8 +22,8 @@
  * THE SOFTWARE.
  */
 
-#ifndef _XLNX_VERSAL_USB_SUBSYSTEM_H_
-#define _XLNX_VERSAL_USB_SUBSYSTEM_H_
+#ifndef XLNX_VERSAL_USB_SUBSYSTEM_H
+#define XLNX_VERSAL_USB_SUBSYSTEM_H
 
 #include "hw/usb/xlnx-versal-usb2-ctrl-regs.h"
 #include "hw/usb/hcd-dwc3.h"
diff --git a/include/hw/usb/xlnx-versal-usb2-ctrl-regs.h b/include/hw/usb/xlnx-versal-usb2-ctrl-regs.h
index 975a717627..b76dce0419 100644
--- a/include/hw/usb/xlnx-versal-usb2-ctrl-regs.h
+++ b/include/hw/usb/xlnx-versal-usb2-ctrl-regs.h
@@ -23,8 +23,8 @@
  * THE SOFTWARE.
  */
 
-#ifndef _XLNX_USB2_REGS_H_
-#define _XLNX_USB2_REGS_H_
+#ifndef XLNX_USB2_REGS_H
+#define XLNX_USB2_REGS_H
 
 #define TYPE_XILINX_VERSAL_USB2_CTRL_REGS "xlnx.versal-usb2-ctrl-regs"
 
diff --git a/include/qemu/plugin-memory.h b/include/qemu/plugin-memory.h
index fbbe99474b..b36def27d7 100644
--- a/include/qemu/plugin-memory.h
+++ b/include/qemu/plugin-memory.h
@@ -6,8 +6,8 @@
  * SPDX-License-Identifier: GPL-2.0-or-later
  */
 
-#ifndef _PLUGIN_MEMORY_H_
-#define _PLUGIN_MEMORY_H_
+#ifndef PLUGIN_MEMORY_H
+#define PLUGIN_MEMORY_H
 
 struct qemu_plugin_hwaddr {
     bool is_io;
diff --git a/include/qemu/selfmap.h b/include/qemu/selfmap.h
index 8382c4c779..80cf920fba 100644
--- a/include/qemu/selfmap.h
+++ b/include/qemu/selfmap.h
@@ -6,8 +6,8 @@
  * SPDX-License-Identifier: GPL-2.0-or-later
  */
 
-#ifndef _SELFMAP_H_
-#define _SELFMAP_H_
+#ifndef SELFMAP_H
+#define SELFMAP_H
 
 typedef struct {
     unsigned long start;
diff --git a/include/user/syscall-trace.h b/include/user/syscall-trace.h
index 42e3b48b03..614cfacfa5 100644
--- a/include/user/syscall-trace.h
+++ b/include/user/syscall-trace.h
@@ -7,8 +7,8 @@
  * SPDX-License-Identifier: GPL-2.0-or-later
  */
 
-#ifndef _SYSCALL_TRACE_H_
-#define _SYSCALL_TRACE_H_
+#ifndef SYSCALL_TRACE_H
+#define SYSCALL_TRACE_H
 
 #include "trace/trace-root.h"
 
diff --git a/plugins/plugin.h b/plugins/plugin.h
index 55017e3581..b13677d0dc 100644
--- a/plugins/plugin.h
+++ b/plugins/plugin.h
@@ -9,8 +9,8 @@
  * SPDX-License-Identifier: GPL-2.0-or-later
  */
 
-#ifndef _PLUGIN_INTERNAL_H_
-#define _PLUGIN_INTERNAL_H_
+#ifndef PLUGIN_INTERNAL_H
+#define PLUGIN_INTERNAL_H
 
 #include <gmodule.h>
 #include "qemu/qht.h"
diff --git a/tests/qtest/fuzz/qos_fuzz.h b/tests/qtest/fuzz/qos_fuzz.h
index 477f11b02b..63d8459b71 100644
--- a/tests/qtest/fuzz/qos_fuzz.h
+++ b/tests/qtest/fuzz/qos_fuzz.h
@@ -10,8 +10,8 @@
  * See the COPYING file in the top-level directory.
  */
 
-#ifndef _QOS_FUZZ_H_
-#define _QOS_FUZZ_H_
+#ifndef QOS_FUZZ_H
+#define QOS_FUZZ_H
 
 #include "tests/qtest/fuzz/fuzz.h"
 #include "tests/qtest/libqos/qgraph.h"
diff --git a/tests/tcg/minilib/minilib.h b/tests/tcg/minilib/minilib.h
index e23361380a..17d0f2f314 100644
--- a/tests/tcg/minilib/minilib.h
+++ b/tests/tcg/minilib/minilib.h
@@ -9,8 +9,8 @@
  * SPDX-License-Identifier: GPL-2.0-only
  */
 
-#ifndef _MINILIB_H_
-#define _MINILIB_H_
+#ifndef MINILIB_H
+#define MINILIB_H
 
 /*
  * Provided by the individual arch