diff --git a/build.properties b/build.properties
index 035cf35b..1baa5e89 100644
--- a/build.properties
+++ b/build.properties
@@ -1,7 +1,7 @@
 minecraft.version=1.7.10
 forge.version=10.13.4.1566-1.7.10
 
-gt.version=5.09.20
+gt.version=5.09.21
 
 ae2.version=rv2-beta-33
 applecore.version=1.7.10-1.2.1+107.59407
diff --git a/src/main/java/gregtech/common/tileentities/machines/multi/GT_MetaTileEntity_Charcoal_Pit.java b/src/main/java/gregtech/common/tileentities/machines/multi/GT_MetaTileEntity_Charcoal_Pit.java
index 6952859d..edd98c50 100644
--- a/src/main/java/gregtech/common/tileentities/machines/multi/GT_MetaTileEntity_Charcoal_Pit.java
+++ b/src/main/java/gregtech/common/tileentities/machines/multi/GT_MetaTileEntity_Charcoal_Pit.java
@@ -39,9 +39,10 @@ public class GT_MetaTileEntity_Charcoal_Pit extends GT_MetaTileEntity_MultiBlock
         return new String[]{"Charcoal pit controller",
                 "Place on top of a pile of wood logs",
                 "Maximum size of logs below 11x11x5",
-                "Each log only can have other logs,",
-                "dirt or grass on its sides or above",
-                "or only logs or bricks below",
+                "No air beween logs alowed",
+                "Sides and top must be dirt or grass",
+                "Below logs must be bricks",
+                "No other blocks can touch logs",
                 "Turns logs into Brittle Charcoal blocks"};
     }