diff --git a/runelite-client/src/main/java/net/runelite/client/plugins/npchighlight/NpcIndicatorsPlugin.java b/runelite-client/src/main/java/net/runelite/client/plugins/npchighlight/NpcIndicatorsPlugin.java
index 183272586d..5bb9eb357d 100644
--- a/runelite-client/src/main/java/net/runelite/client/plugins/npchighlight/NpcIndicatorsPlugin.java
+++ b/runelite-client/src/main/java/net/runelite/client/plugins/npchighlight/NpcIndicatorsPlugin.java
@@ -548,7 +548,16 @@ public class NpcIndicatorsPlugin extends Plugin
 
 					if (mn.getDiedOnTick() != -1)
 					{
-						mn.setRespawnTime(client.getTickCount() + 1 - mn.getDiedOnTick());
+						final int respawnTime = client.getTickCount() + 1 - mn.getDiedOnTick();
+
+						// By killing a monster and leaving the area before seeing it again, an erroneously lengthy
+						// respawn time can be recorded. Thus, if the respawn time is already set and is greater than
+						// the observed time, assume that the lower observed respawn time is correct.
+						if (mn.getRespawnTime() == -1 || respawnTime < mn.getRespawnTime())
+						{
+							mn.setRespawnTime(respawnTime);
+						}
+
 						mn.setDiedOnTick(-1);
 					}