diff --git a/gtk/gtkeditable.c b/gtk/gtkeditable.c
index 0312d5fae9..41fb0b729c 100644
--- a/gtk/gtkeditable.c
+++ b/gtk/gtkeditable.c
@@ -517,7 +517,7 @@ gtk_editable_delete_text (GtkEditable *editable,
 {
   g_return_if_fail (GTK_IS_EDITABLE (editable));
   g_return_if_fail (start_pos >= 0);
-  g_return_if_fail (end_pos == -1 || end_pos > start_pos);
+  g_return_if_fail (end_pos == -1 || end_pos >= start_pos);
 
   GTK_EDITABLE_GET_IFACE (editable)->do_delete_text (editable, start_pos, end_pos);
 }
@@ -552,7 +552,7 @@ gtk_editable_get_chars (GtkEditable *editable,
 
   g_return_val_if_fail (GTK_IS_EDITABLE (editable), NULL);
   g_return_val_if_fail (start_pos >= 0, NULL);
-  g_return_val_if_fail (end_pos == -1 || end_pos > start_pos, NULL);
+  g_return_val_if_fail (end_pos == -1 || end_pos >= start_pos, NULL);
 
   text = GTK_EDITABLE_GET_IFACE (editable)->get_text (editable);
   length = g_utf8_strlen (text, -1);