diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 6f7474f2826..b6953b015ac 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,7 @@
+2019-08-15  Tom de Vries  <tdevries@suse.de>
+
+	* linux-nat-trad.c: Include gdbarch.h.
+
 2019-08-14  Alan Hayward  <alan.hayward@arm.com>
 
 	* aarch64-tdep.c (aarch64_analyze_prologue): Allow any valid
diff --git a/gdb/linux-nat-trad.c b/gdb/linux-nat-trad.c
index 04507e80418..c6208dccdb4 100644
--- a/gdb/linux-nat-trad.c
+++ b/gdb/linux-nat-trad.c
@@ -22,6 +22,7 @@
 
 #include "nat/gdb_ptrace.h"
 #include "inf-ptrace.h"
+#include "gdbarch.h"
 
 /* Fetch register REGNUM from the inferior.  */