diff --git a/runelite-client/src/main/java/net/runelite/client/plugins/slayer/SlayerPlugin.java b/runelite-client/src/main/java/net/runelite/client/plugins/slayer/SlayerPlugin.java
index 8204846ffe..7215821734 100644
--- a/runelite-client/src/main/java/net/runelite/client/plugins/slayer/SlayerPlugin.java
+++ b/runelite-client/src/main/java/net/runelite/client/plugins/slayer/SlayerPlugin.java
@@ -770,7 +770,8 @@ public class SlayerPlugin extends Plugin
 		}
 
 		if (TASK_STRING_VALIDATION.matcher(task.getTask()).find() || task.getTask().length() > TASK_STRING_MAX_LENGTH ||
-			TASK_STRING_VALIDATION.matcher(task.getLocation()).find() || task.getLocation().length() > TASK_STRING_MAX_LENGTH)
+			TASK_STRING_VALIDATION.matcher(task.getLocation()).find() || task.getLocation().length() > TASK_STRING_MAX_LENGTH ||
+			Task.getTask(task.getTask()) == null || !Task.LOCATIONS.contains(task.getLocation()))
 		{
 			log.debug("Validation failed for task name or location: {}", task);
 			return;
diff --git a/runelite-client/src/main/java/net/runelite/client/plugins/slayer/Task.java b/runelite-client/src/main/java/net/runelite/client/plugins/slayer/Task.java
index 654150ebda..716711af23 100644
--- a/runelite-client/src/main/java/net/runelite/client/plugins/slayer/Task.java
+++ b/runelite-client/src/main/java/net/runelite/client/plugins/slayer/Task.java
@@ -26,7 +26,9 @@
 package net.runelite.client.plugins.slayer;
 
 import com.google.common.base.Preconditions;
+import com.google.common.collect.ImmutableList;
 import com.google.common.collect.ImmutableMap;
+import java.util.List;
 import java.util.Map;
 import javax.annotation.Nullable;
 import lombok.Getter;
@@ -176,6 +178,48 @@ enum Task
 	//</editor-fold>
 
 	private static final Map<String, Task> tasks;
+	static final List<String> LOCATIONS = ImmutableList.of(
+		"", // no location is a valid location
+		"Abyss",
+		"Ancient Cavern",
+		"Asgarnian Ice Dungeon",
+		"Brimhaven Dungeon",
+		"Brine Rat Cavern",
+		"Catacombs of Kourend",
+		"Chasm of Fire",
+		"Clan Wars",
+		"Death Plateau",
+		"Evil Chicken's Lair",
+		"Fossil Island",
+		"Fremennik Slayer Dungeon",
+		"God Wars Dungeon",
+		"Iorwerth Dungeon",
+		"Kalphite Lair",
+		"Karuulm Slayer Dungeon",
+		"Keldagrim",
+		"Kraken Cove",
+		"Lighthouse",
+		"Lithkren Vault",
+		"Lizardman Canyon",
+		"Lizardman Settlement",
+		"Molch",
+		"Mount Quidamortem",
+		"Mourner Tunnels",
+		"Ogre Enclave",
+		"Slayer Tower",
+		"Smoke Devil Dungeon",
+		"Smoke Dungeon",
+		"Stronghold of Security",
+		"Stronghold Slayer Dungeon",
+		"task-only Kalphite Cave",
+		"Taverley Dungeon",
+		"Troll Stronghold",
+		"Waterbirth Island",
+		"Waterfall Dungeon",
+		"Wilderness",
+		"Witchaven Dungeon",
+		"Zanaris"
+	);
 
 	private final String name;
 	private final int itemSpriteId;