diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index a9db32253da..f2992f17844 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,7 @@
+2020-01-13  Simon Marchi  <simon.marchi@efficios.com>
+
+	* python/python.c (init__gdb_module): Add declaration.
+
 2020-01-13  Simon Marchi  <simon.marchi@efficios.com>
 
 	* aarch64-fbsd-nat.c (_initialize_aarch64_fbsd_nat): Add declaration.
diff --git a/gdb/python/python.c b/gdb/python/python.c
index f7aadb1633c..e0c05f1d068 100644
--- a/gdb/python/python.c
+++ b/gdb/python/python.c
@@ -1555,6 +1555,7 @@ finalize_python (void *ignore)
 /* This is called via the PyImport_AppendInittab mechanism called
    during initialization, to make the built-in _gdb module known to
    Python.  */
+PyMODINIT_FUNC init__gdb_module (void);
 PyMODINIT_FUNC
 init__gdb_module (void)
 {