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-rw-r--r--gtk/a11y/gtkcellaccessible.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/gtk/a11y/gtkcellaccessible.h b/gtk/a11y/gtkcellaccessible.h
index caa1cc6e61..7a2d88ec03 100644
--- a/gtk/a11y/gtkcellaccessible.h
+++ b/gtk/a11y/gtkcellaccessible.h
@@ -15,6 +15,10 @@
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
+#if !defined (__GTK_A11Y_H_INSIDE__) && !defined (GTK_COMPILATION)
+#error "Only <gtk/gtk-a11y.h> can be included directly."
+#endif
+
#ifndef __GTK_CELL_ACCESSIBLE_H__
#define __GTK_CELL_ACCESSIBLE_H__