diff --git a/build.properties b/build.properties
index 9ea7e57b..282f4ef0 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=5.09.28
+gt.version=5.09.29pre
 
 ae2.version=rv2-beta-33
 applecore.version=1.7.10-1.2.1+107.59407
diff --git a/src/main/java/gregtech/common/items/armor/components/ArmorPlating.java b/src/main/java/gregtech/common/items/armor/components/ArmorPlating.java
index 9f87678e..2e02ac7b 100644
--- a/src/main/java/gregtech/common/items/armor/components/ArmorPlating.java
+++ b/src/main/java/gregtech/common/items/armor/components/ArmorPlating.java
@@ -78,7 +78,7 @@ public class ArmorPlating extends ArmorComponent{
 
 	@Override
 	public void calculateArmor(ArmorData aArmorData) {
-		calDef(StatType.FALLDEFENCE, aArmorData);
+		calDefAdd(StatType.FALLDEFENCE, aArmorData);
 		calDef(StatType.PHYSICALDEFENCE, aArmorData);
 		calDef(StatType.PROJECTILEDEFENCE, aArmorData);
 		calDef(StatType.FIREDEFENCE, aArmorData);
@@ -99,5 +99,14 @@ public class ArmorPlating extends ArmorComponent{
 		float tComponentDef = mStat.get(aType);
 		aArmorData.mStat.put(aType, tArmorDef + ((1.0f -tArmorDef) * tComponentDef));
 	}
+	
+	public void calDefAdd(StatType aType, ArmorData aArmorData){
+		float tArmorDef = 0.0f;
+		if(aArmorData.mStat.containsKey(aType)){
+		tArmorDef = aArmorData.mStat.get(aType);
+		aArmorData.mStat.remove(aType);}
+		float tComponentDef = mStat.get(aType);
+		aArmorData.mStat.put(aType, tArmorDef + tComponentDef);
+	}
 
 }