diff --git a/src/interface/keyboard_shortcut.c b/src/interface/keyboard_shortcut.c
index 606b45a181..a10fd4f5c4 100644
--- a/src/interface/keyboard_shortcut.c
+++ b/src/interface/keyboard_shortcut.c
@@ -472,12 +472,14 @@ static void shortcut_screenshot()
 
 static void shortcut_reduce_game_speed()
 {
-	game_reduce_game_speed();
+	if (network_get_mode() == NETWORK_MODE_NONE)
+		game_reduce_game_speed();
 }
 
 static void shortcut_increase_game_speed()
 {
-	game_increase_game_speed();
+	if (network_get_mode() == NETWORK_MODE_NONE)
+		game_increase_game_speed();
 }
 
 static void shortcut_open_cheat_window()