diff --git a/src/xyz/soper/arty/item/Mortar.java b/src/xyz/soper/arty/item/Mortar.java
index db6e496..277f597 100644
--- a/src/xyz/soper/arty/item/Mortar.java
+++ b/src/xyz/soper/arty/item/Mortar.java
@@ -106,6 +106,8 @@ public class Mortar {
     public int getFailureType(Shell shell){
         if(isFailure(shell)){
             Random random = new Random(block.getWorld().getSeed() + System.currentTimeMillis());
+            double maxDouble;
+
             double randDouble = random.nextDouble();
             //TODO: compare random double and create an algo to determine type of failure.
         }
@@ -119,7 +121,17 @@ public class Mortar {
      */
     private boolean isFailure(Shell shell){
         Random random = new Random(block.getWorld().getSeed() + System.currentTimeMillis());
-        return random.nextDouble() < failMultiplier*shell.failChance;
+        if(shell.incendiaryType && !incendiaryCapable) return random.nextDouble() < 3*failMultiplier*shell.failChance;
+        else return random.nextDouble() < failMultiplier*shell.failChance;
+    }
+
+    /**
+     *
+     * @param shell Shell to test.
+     * @return True if the shell and mortar are compatible.
+     */
+    public boolean incendiaryCompatible(Shell shell){ //TODO: check if this is right
+        return incendiaryCapable || !shell.incendiaryType;
     }
 
     public static boolean isMortar(Block block){