diff --git a/gtk/gtkdebug.h b/gtk/gtkdebug.h
index 4cc5fd347c..a755ca60fd 100644
--- a/gtk/gtkdebug.h
+++ b/gtk/gtkdebug.h
@@ -48,7 +48,7 @@ typedef enum {
   GTK_DEBUG_ICONTHEME       = 1 << 9,
   GTK_DEBUG_PRINTING        = 1 << 10,
   GTK_DEBUG_BUILDER         = 1 << 11,
-  GTK_DEBUG_EXTENDED_LAYOUT = 1 << 12
+  GTK_DEBUG_SIZE_REQUEST    = 1 << 12
 } GtkDebugFlag;
 
 #ifdef G_ENABLE_DEBUG
diff --git a/gtk/gtkmain.c b/gtk/gtkmain.c
index 22206587f8..846135da44 100644
--- a/gtk/gtkmain.c
+++ b/gtk/gtkmain.c
@@ -215,7 +215,7 @@ static const GDebugKey gtk_debug_keys[] = {
   {"icontheme", GTK_DEBUG_ICONTHEME},
   {"printing", GTK_DEBUG_PRINTING},
   {"builder", GTK_DEBUG_BUILDER},
-  {"extended-layout", GTK_DEBUG_EXTENDED_LAYOUT},
+  {"size-request", GTK_DEBUG_SIZE_REQUEST},
 };
 #endif /* G_ENABLE_DEBUG */