diff --git a/gdbstub/internals.h b/gdbstub/internals.h
index b23999f951..7df0e11c47 100644
--- a/gdbstub/internals.h
+++ b/gdbstub/internals.h
@@ -6,8 +6,8 @@
  * SPDX-License-Identifier: GPL-2.0-or-later
  */
 
-#ifndef _INTERNALS_H_
-#define _INTERNALS_H_
+#ifndef GDBSTUB_INTERNALS_H
+#define GDBSTUB_INTERNALS_H
 
 #include "exec/cpu-common.h"
 
@@ -16,4 +16,4 @@ int gdb_breakpoint_insert(CPUState *cs, int type, vaddr addr, vaddr len);
 int gdb_breakpoint_remove(CPUState *cs, int type, vaddr addr, vaddr len);
 void gdb_breakpoint_remove_all(CPUState *cs);
 
-#endif /* _INTERNALS_H_ */
+#endif /* GDBSTUB_INTERNALS_H */