diff --git a/src/main/java/tconstruct/util/IMCHandler.java b/src/main/java/tconstruct/util/IMCHandler.java
index dcb1621e6db..567c5d8b4de 100644
--- a/src/main/java/tconstruct/util/IMCHandler.java
+++ b/src/main/java/tconstruct/util/IMCHandler.java
@@ -284,7 +284,7 @@ else if(tag.hasKey("Stonebound") && tag.hasKey("Jagged")) {
         int color = tag.getInteger("Color");
 
         if(tag.hasKey("Jagged"))
-            shoddy = tag.getFloat("Jagged");
+            shoddy = -tag.getFloat("Jagged");
 
         if(tag.hasKey("localizationString"))
             return new ToolMaterial(name, tag.getString("localizationString"), hlvl, durability, speed, attack, handle, reinforced, shoddy, style, color);