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 7215821734..8bb9d42b3a 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
@@ -537,12 +537,9 @@ public class SlayerPlugin extends Plugin
 
 		final Task task = Task.getTask(taskName);
 
-		if (task == null)
-		{
-			return;
-		}
-
-		final int taskKillExp = task.getExpectedKillExp();
+		// null tasks are technically valid, it only means they arent explicitly defined in the Task enum
+		// allow them through so that if there is a task capture failure the counter will still work
+		final int taskKillExp = task != null ? task.getExpectedKillExp() : 0;
 
 		// Only count exp gain as a kill if the task either has no expected exp for a kill, or if the exp gain is equal
 		// to the expected exp gain for the task.
diff --git a/runelite-client/src/test/java/net/runelite/client/plugins/slayer/SlayerPluginTest.java b/runelite-client/src/test/java/net/runelite/client/plugins/slayer/SlayerPluginTest.java
index f2007e7393..fb4cdabe81 100644
--- a/runelite-client/src/test/java/net/runelite/client/plugins/slayer/SlayerPluginTest.java
+++ b/runelite-client/src/test/java/net/runelite/client/plugins/slayer/SlayerPluginTest.java
@@ -420,6 +420,52 @@ public class SlayerPluginTest
 		verifyNoMoreInteractions(notifier);
 	}
 
+	@Test
+	public void testCorrectlyCapturedTaskKill()
+	{
+		final Player player = mock(Player.class);
+		when(player.getLocalLocation()).thenReturn(new LocalPoint(0, 0));
+		when(client.getLocalPlayer()).thenReturn(player);
+
+		final ExperienceChanged experienceChanged = new ExperienceChanged();
+		experienceChanged.setSkill(Skill.SLAYER);
+
+		when(client.getSkillExperience(Skill.SLAYER)).thenReturn(100);
+		slayerPlugin.onExperienceChanged(experienceChanged);
+
+		slayerPlugin.setTaskName("Dagannoth");
+		slayerPlugin.setAmount(143);
+
+		when(client.getSkillExperience(Skill.SLAYER)).thenReturn(110);
+		slayerPlugin.onExperienceChanged(experienceChanged);
+
+		assertEquals(142, slayerPlugin.getAmount());
+	}
+
+	@Test
+	public void testIncorrectlyCapturedTaskKill()
+	{
+		final Player player = mock(Player.class);
+		when(player.getLocalLocation()).thenReturn(new LocalPoint(0, 0));
+		when(client.getLocalPlayer()).thenReturn(player);
+
+		final ExperienceChanged experienceChanged = new ExperienceChanged();
+		experienceChanged.setSkill(Skill.SLAYER);
+
+		when(client.getSkillExperience(Skill.SLAYER)).thenReturn(100);
+		slayerPlugin.onExperienceChanged(experienceChanged);
+
+		slayerPlugin.setTaskName("Monster");
+		slayerPlugin.setAmount(98);
+
+		assert Task.getTask("Monster") == null;
+
+		when(client.getSkillExperience(Skill.SLAYER)).thenReturn(110);
+		slayerPlugin.onExperienceChanged(experienceChanged);
+
+		assertEquals(97, slayerPlugin.getAmount());
+	}
+
 	@Test
 	public void testJadTaskKill()
 	{