diff --git a/docs/reference/gdk/gdk3-sections.txt b/docs/reference/gdk/gdk3-sections.txt
index 121e6fc64e..5902b08536 100644
--- a/docs/reference/gdk/gdk3-sections.txt
+++ b/docs/reference/gdk/gdk3-sections.txt
@@ -680,7 +680,6 @@ GdkGrabOwnership
 
 <SUBSECTION>
 gdk_device_get_name
-gdk_device_set_source
 gdk_device_get_source
 gdk_device_set_mode
 gdk_device_get_mode
diff --git a/gdk/gdk.symbols b/gdk/gdk.symbols
index d23f75390f..e9b45f9307 100644
--- a/gdk/gdk.symbols
+++ b/gdk/gdk.symbols
@@ -75,7 +75,6 @@ gdk_device_manager_list_devices
 gdk_device_set_axis_use
 gdk_device_set_key
 gdk_device_set_mode
-gdk_device_set_source
 gdk_device_type_get_type G_GNUC_CONST
 gdk_device_ungrab
 gdk_device_warp
diff --git a/gdk/gdkdevice.c b/gdk/gdkdevice.c
index 8d23314f38..3e78fc0035 100644
--- a/gdk/gdkdevice.c
+++ b/gdk/gdkdevice.c
@@ -609,23 +609,6 @@ gdk_device_get_source (GdkDevice *device)
   return device->source;
 }
 
-/**
- * gdk_device_set_source:
- * @device: a #GdkDevice.
- * @source: the source type.
- *
- * Sets the source type for an input device.
- **/
-void
-gdk_device_set_source (GdkDevice      *device,
-                       GdkInputSource  source)
-{
-  g_return_if_fail (GDK_IS_DEVICE (device));
-
-  device->source = source;
-  g_object_notify (G_OBJECT (device), "input-source");
-}
-
 /**
  * gdk_device_get_mode:
  * @device: a #GdkDevice
diff --git a/gdk/gdkdevice.h b/gdk/gdkdevice.h
index 3cc15e39f5..1e4ae22b3b 100644
--- a/gdk/gdkdevice.h
+++ b/gdk/gdkdevice.h
@@ -161,8 +161,6 @@ gboolean              gdk_device_get_has_cursor (GdkDevice *device);
 
 /* Functions to configure a device */
 GdkInputSource gdk_device_get_source    (GdkDevice      *device);
-void           gdk_device_set_source    (GdkDevice      *device,
-                                         GdkInputSource  source);
 
 GdkInputMode   gdk_device_get_mode      (GdkDevice      *device);
 gboolean       gdk_device_set_mode      (GdkDevice      *device,