diff --git a/runelite-api/src/main/java/net/runelite/api/ProjectileID.java b/runelite-api/src/main/java/net/runelite/api/ProjectileID.java
index 56c1354b56..163629020c 100644
--- a/runelite-api/src/main/java/net/runelite/api/ProjectileID.java
+++ b/runelite-api/src/main/java/net/runelite/api/ProjectileID.java
@@ -27,6 +27,7 @@ package net.runelite.api;
 public class ProjectileID
 {
 	public static final int CANNONBALL = 53;
+	public static final int GRANITE_CANNONBALL = 1443;
 
 	public static final int LIZARDMAN_SHAMAN_AOE = 1293;
 	public static final int CRAZY_ARCHAEOLOGIST_AOE = 1260;
diff --git a/runelite-client/src/main/java/net/runelite/client/plugins/cannon/CannonPlugin.java b/runelite-client/src/main/java/net/runelite/client/plugins/cannon/CannonPlugin.java
index 018cfeddb4..41d1867876 100644
--- a/runelite-client/src/main/java/net/runelite/client/plugins/cannon/CannonPlugin.java
+++ b/runelite-client/src/main/java/net/runelite/client/plugins/cannon/CannonPlugin.java
@@ -39,6 +39,7 @@ import net.runelite.api.Perspective;
 import net.runelite.api.Player;
 import net.runelite.api.Projectile;
 import static net.runelite.api.ProjectileID.CANNONBALL;
+import static net.runelite.api.ProjectileID.GRANITE_CANNONBALL;
 import net.runelite.api.events.ChatMessage;
 import net.runelite.api.events.GameObjectsChanged;
 import net.runelite.api.events.ProjectileMoved;
@@ -113,7 +114,7 @@ public class CannonPlugin extends Plugin
 	{
 		Projectile projectile = event.getProjectile();
 
-		if (projectile.getId() == CANNONBALL && myCannon != null)
+		if ((projectile.getId() == CANNONBALL || projectile.getId() == GRANITE_CANNONBALL) && myCannon != null)
 		{
 			net.runelite.api.Point projectileLoc = Perspective.localToWorld(client, new net.runelite.api.Point(projectile.getX1(), projectile.getY1()));