diff --git a/src/cavegen.cpp b/src/cavegen.cpp
index dbed79951..07fb629e2 100644
--- a/src/cavegen.cpp
+++ b/src/cavegen.cpp
@@ -332,7 +332,7 @@ void CavesRandomWalk::makeCave(MMVManip *vm, v3s16 nmin, v3s16 nmax,
 
 	route_y_min = 0;
 	// Allow half a diameter + 7 over stone surface
-	route_y_max = -of.Y + max_stone_y + max_tunnel_diameter / 2 + 7;
+	route_y_max = -of.Y + max_stone_height + max_tunnel_diameter / 2 + 7;
 
 	// Limit maximum to area
 	route_y_max = rangelim(route_y_max, 0, ar.Y - 1);
diff --git a/src/cavegen.h b/src/cavegen.h
index a1140594e..1cb8dd90d 100644
--- a/src/cavegen.h
+++ b/src/cavegen.h
@@ -134,7 +134,6 @@ public:
 	bool large_cave_is_flat;
 	bool flooded;
 
-	s16 max_stone_y;
 	v3s16 node_min;
 	v3s16 node_max;