diff --git a/kubejs/data/tfg/worldgen/configured_feature/mars/terrain/red_granite_delta.json b/kubejs/data/tfg/worldgen/configured_feature/mars/terrain/red_granite_delta.json
index 631597a6a..be412f536 100644
--- a/kubejs/data/tfg/worldgen/configured_feature/mars/terrain/red_granite_delta.json
+++ b/kubejs/data/tfg/worldgen/configured_feature/mars/terrain/red_granite_delta.json
@@ -2,7 +2,7 @@
 	"type": "minecraft:delta_feature",
 	"config": {
 		"contents": {
-			"Name": "gtceu:red_granite_cobblestone"
+			"Name": "tfg:rock/cobble_red_granite_slab"
 		},
 		"rim": {
 			"Name": "tfg:rock/hardened_red_granite"