diff --git a/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/levels/rooms/quest/MineEntrance.java b/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/levels/rooms/quest/MineEntrance.java
index 6d844a571..e4d05046d 100644
--- a/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/levels/rooms/quest/MineEntrance.java
+++ b/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/levels/rooms/quest/MineEntrance.java
@@ -124,9 +124,9 @@ public class MineEntrance extends EntranceRoom {
 					}
 					dist = GameMath.gate(1f, dist-0.5f, 5f);
 					float val = Random.Float((float) Math.pow(dist, 2));
-					if (val <= 0.75f) {
+					if (val <= 0.75f || dist <= 1) {
 						Painter.set(level, cell, Terrain.MINE_BOULDER);
-					} else if (val <= 3f && dist <= 3){
+					} else if (val <= 5f && dist <= 3){
 						Painter.set(level, cell, Terrain.EMPTY_DECO);
 					}
 				}
diff --git a/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/levels/rooms/quest/MineGiantRoom.java b/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/levels/rooms/quest/MineGiantRoom.java
index 943e0c6eb..d8d1e2344 100644
--- a/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/levels/rooms/quest/MineGiantRoom.java
+++ b/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/levels/rooms/quest/MineGiantRoom.java
@@ -103,11 +103,11 @@ public class MineGiantRoom extends CaveRoom {
 					for (Door d : doors){
 						dist = Math.min(dist, Point.distance(p, d));
 					}
-					dist = GameMath.gate(1f, dist-0.5f, 3f);
+					dist = GameMath.gate(1f, dist-0.5f, 3.1f);
 					float val = Random.Float((float) Math.pow(dist, 2));
-					if (val <= 0.75f) {
+					if (val <= 0.75f || dist <= 1) {
 						Painter.set(level, cell, Terrain.MINE_BOULDER);
-					} else if (val <= 3f && dist <= 3){
+					} else if (val <= 5f && dist <= 3){
 						Painter.set(level, cell, Terrain.EMPTY_DECO);
 					}
 				}
diff --git a/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/levels/rooms/quest/MineLargeRoom.java b/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/levels/rooms/quest/MineLargeRoom.java
index eac9ccf50..dedf0a957 100644
--- a/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/levels/rooms/quest/MineLargeRoom.java
+++ b/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/levels/rooms/quest/MineLargeRoom.java
@@ -172,9 +172,9 @@ public class MineLargeRoom extends CaveRoom {
 					}
 					dist = GameMath.gate(1f, dist-0.5f, 4f);
 					float val = Random.Float((float) Math.pow(dist, 2));
-					if (val <= 0.75f) {
+					if (val <= 0.75f || dist <= 1) {
 						Painter.set(level, cell, Terrain.MINE_BOULDER);
-					} else if (val <= 3f && dist <= 3){
+					} else if (val <= 5f && dist <= 3){
 						Painter.set(level, cell, Terrain.EMPTY_DECO);
 					}
 				}
diff --git a/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/levels/rooms/quest/MineSmallRoom.java b/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/levels/rooms/quest/MineSmallRoom.java
index cbbe0ed89..8d866b57a 100644
--- a/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/levels/rooms/quest/MineSmallRoom.java
+++ b/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/levels/rooms/quest/MineSmallRoom.java
@@ -93,9 +93,9 @@ public class MineSmallRoom extends CaveRoom {
 					}
 					dist = GameMath.gate(1f, dist, 5f);
 					float val = Random.Float((float) Math.pow(dist, 2));
-					if (val <= 0.75f) {
+					if (val <= 0.75f || dist <= 1) {
 						Painter.set(level, cell, Terrain.MINE_BOULDER);
-					} else if (val <= 3f && dist <= 2){
+					} else if (val <= 5f && dist <= 2){
 						Painter.set(level, cell, Terrain.EMPTY_DECO);
 					}
 				}