diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 019e9000d04..30714f52aaf 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,7 @@
+2020-05-30  Samuel Thibault  <samuel.thibault@ens-lyon.org>
+
+	* gnu-nat.c: Include "gdbarch.h".
+
 2020-05-30  Samuel Thibault  <samuel.thibault@ens-lyon.org>
 
 	* reply_mig_hack.awk (Error return): Cast function through
diff --git a/gdb/gnu-nat.c b/gdb/gnu-nat.c
index 3b438a9a434..9b93488b41b 100644
--- a/gdb/gnu-nat.c
+++ b/gdb/gnu-nat.c
@@ -64,6 +64,7 @@ extern "C"
 #include "language.h"
 #include "target.h"
 #include "gdbsupport/gdb_wait.h"
+#include "gdbarch.h"
 #include "gdbcmd.h"
 #include "gdbcore.h"
 #include "gdbthread.h"