diff --git a/builtin/settingtypes.txt b/builtin/settingtypes.txt
index ba3339d32..a0a4d80e5 100644
--- a/builtin/settingtypes.txt
+++ b/builtin/settingtypes.txt
@@ -477,10 +477,10 @@ pause_fps_max (FPS in pause menu) int 20
 viewing_range (Viewing range) int 100 20 4000
 
 #    Width component of the initial window size.
-screenW (Screen width) int 800
+screen_w (Screen width) int 800
 
 #    Height component of the initial window size.
-screenH (Screen height) int 600
+screen_h (Screen height) int 600
 
 #    Save window size automatically when modified.
 autosave_screensize (Autosave Screen Size) bool true
diff --git a/minetest.conf.example b/minetest.conf.example
index c933047dd..c032fa9e9 100644
--- a/minetest.conf.example
+++ b/minetest.conf.example
@@ -549,11 +549,11 @@ max_out_chat_queue_size = 20
 
 #    Width component of the initial window size.
 #    type: int
-# screenW = 800
+# screen_w = 800
 
 #    Height component of the initial window size.
 #    type: int
-# screenH = 600
+# screen_h = 600
 
 #    Save the window size automatically when modified.
 #    type: bool