diff --git a/worldedit-core/src/main/java/com/sk89q/worldedit/command/GenerationCommands.java b/worldedit-core/src/main/java/com/sk89q/worldedit/command/GenerationCommands.java
index bb1d58886..cfa48f6f2 100644
--- a/worldedit-core/src/main/java/com/sk89q/worldedit/command/GenerationCommands.java
+++ b/worldedit-core/src/main/java/com/sk89q/worldedit/command/GenerationCommands.java
@@ -50,6 +50,7 @@ import com.sk89q.worldedit.regions.CuboidRegion;
 import com.sk89q.worldedit.regions.Region;
 import com.sk89q.worldedit.util.TreeGenerator.TreeType;
 import com.sk89q.worldedit.util.formatting.text.TextComponent;
+import com.sk89q.worldedit.util.formatting.text.format.TextColor;
 import com.sk89q.worldedit.world.biome.BiomeType;
 import com.sk89q.worldedit.world.block.BlockType;
 import org.enginehub.piston.annotation.Command;
@@ -240,6 +241,9 @@ public class GenerationCommands {
             @Arg(desc = "The density of the forest, between 0 and 100", def = "5")
                     double density
     ) throws WorldEditException {
+        //FAWE start
+        actor.print(TextComponent.of("Warning: This brush is currently not undo-able due to a Spigot bug!").color(TextColor.RED));
+        //FAWE end
         checkCommandArgument(0 <= density && density <= 100, "Density must be between 0 and 100");
         worldEdit.checkMaxRadius(size);
         density /= 100;
diff --git a/worldedit-core/src/main/java/com/sk89q/worldedit/command/ToolCommands.java b/worldedit-core/src/main/java/com/sk89q/worldedit/command/ToolCommands.java
index 416e1a00a..c6af83b07 100644
--- a/worldedit-core/src/main/java/com/sk89q/worldedit/command/ToolCommands.java
+++ b/worldedit-core/src/main/java/com/sk89q/worldedit/command/ToolCommands.java
@@ -242,6 +242,9 @@ public class ToolCommands {
                     TreeGenerator.TreeType type
     ) throws WorldEditException {
         setTool(player, session, new TreePlanter(type), "worldedit.tool.tree.equip");
+        //FAWE start
+        player.print(TextComponent.of("Warning: This brush is currently not undo-able due to a Spigot bug!").color(TextColor.RED));
+        //FAWE end
     }
 
     @Command(