diff --git a/src/main/java/tconstruct/smeltery/TinkerSmeltery.java b/src/main/java/tconstruct/smeltery/TinkerSmeltery.java
index d8e32e3c3d2..d1c80ba60af 100644
--- a/src/main/java/tconstruct/smeltery/TinkerSmeltery.java
+++ b/src/main/java/tconstruct/smeltery/TinkerSmeltery.java
@@ -1001,7 +1001,7 @@ public void addOreDictionarySmelteryRecipes ()
         // Compressed materials
         for (int i = 1; i <= 8; i++)
         {
-            Smeltery.addDictionaryMelting("compressedCobblestone" + i + "x", FluidType.getFluidType("Stone"), 0, TConstruct.ingotLiquidValue / 18 * (9 ^ i));
+            Smeltery.addDictionaryMelting("compressedCobblestone" + i + "x", FluidType.getFluidType("Stone"), 0, TConstruct.ingotLiquidValue / 18 * (int)Math.pow(9, i));
         }
         Smeltery.addDictionaryMelting("compressedSand1x", FluidType.getFluidType("Glass"), 175, FluidContainerRegistry.BUCKET_VOLUME * 9);
     }