diff --git a/kubejs/data/tfg/worldgen/configured_feature/mars/terrain/empty_fissure.json b/kubejs/data/tfg/worldgen/configured_feature/mars/terrain/empty_fissure.json
index 31814a9d7..7e9a65b76 100644
--- a/kubejs/data/tfg/worldgen/configured_feature/mars/terrain/empty_fissure.json
+++ b/kubejs/data/tfg/worldgen/configured_feature/mars/terrain/empty_fissure.json
@@ -1,7 +1,7 @@
 {
 	"type": "tfc:fissure",
 	"config": {
-		"wall_state": "tfc:rock/raw/basalt",
+		"wall_state": "minecraft:obsidian",
 		"fluid_state": "minecraft:air",
 		"count": 1,
 		"radius": 6
diff --git a/kubejs/data/tfg/worldgen/configured_feature/mars/terrain/empty_rivulet.json b/kubejs/data/tfg/worldgen/configured_feature/mars/terrain/empty_rivulet.json
index 452475577..a995fffec 100644
--- a/kubejs/data/tfg/worldgen/configured_feature/mars/terrain/empty_rivulet.json
+++ b/kubejs/data/tfg/worldgen/configured_feature/mars/terrain/empty_rivulet.json
@@ -1,6 +1,6 @@
 {
 	"type": "tfc:rivulet",
 	"config": {
-		"state": "tfc:rock/cobble/basalt"
+		"state": "minecraft:obsidian"
 	}
 }
\ No newline at end of file
diff --git a/kubejs/data/tfg/worldgen/configured_feature/mars/terrain/water_fissure.json b/kubejs/data/tfg/worldgen/configured_feature/mars/terrain/water_fissure.json
index 5c74c3d6d..ac07e6b7e 100644
--- a/kubejs/data/tfg/worldgen/configured_feature/mars/terrain/water_fissure.json
+++ b/kubejs/data/tfg/worldgen/configured_feature/mars/terrain/water_fissure.json
@@ -1,7 +1,7 @@
 {
 	"type": "tfc:fissure",
 	"config": {
-		"wall_state": "tfc:rock/raw/basalt",
+		"wall_state": "minecraft:obsidian",
 		"fluid_state": "tfg:fluid/semiheavy_ammoniacal_water",
 		"count": 1,
 		"radius": 6