diff --git a/mapgen.lua b/mapgen.lua
index 44b6a0dc02a480520be1697fd53a3e95e1a924c3..f657566e2145efdf72bb88c8c2e85e05ec120a40 100644
--- a/mapgen.lua
+++ b/mapgen.lua
@@ -92,7 +92,7 @@ add_biome("caves_snowtop", "default:snowblock", "default:dirt", 3, "air", 8,
 add_biome("glacier", "default:snowblock", "default:snowblock", 1,
 	"default:snowblock", 3, "default:ice", "default:ice", 10, nil, "default:ice", 351, 31000, 0, 95, ethereal.glacier)
 
-add_biome("glacier_ocean", "default:snowblock", "default:silver_sand", 1, "default:silver_sand", 3,
+add_biome("glacier_ocean", "default:snowblock", "default:silver_sand", 1, "default:silver_sandstone", 3,
 	"default:ice", "default:ice", 2, "default:ice", "default:gravel", 320, 350, 0, 95, ethereal.glacier)
 
 add_biome("clearing", nil, "ethereal:green_dirt", 1, "default:dirt", 3,
@@ -168,7 +168,7 @@ add_biome("grassy_ocean", nil, "defaut:sand", 2, "default:gravel", 1,
 add_biome("grayness", nil, "ethereal:gray_dirt", 1, "default:dirt", 3,
 	nil, nil, nil, nil, nil, 1, 4, 85, 92, ethereal.grayness)
 
-add_biome("grayness_ocean", nil, "default:silver_sand", 1, "default:silver_sand", 2,
+add_biome("grayness_ocean", nil, "default:silver_sand", 1, "default:silver_sandstone", 2,
 	nil, nil, nil, nil, nil, -192, 0, 60, 72, ethereal.grayness)
 
 add_biome("graynesstwo", nil, "ethereal:gray_dirt", 1, "default:dirt", 3,