diff --git a/runelite-client/src/main/java/net/runelite/client/plugins/ExternalPluginManager.java b/runelite-client/src/main/java/net/runelite/client/plugins/ExternalPluginManager.java
index 1e3d7bf99d..2f62888910 100644
--- a/runelite-client/src/main/java/net/runelite/client/plugins/ExternalPluginManager.java
+++ b/runelite-client/src/main/java/net/runelite/client/plugins/ExternalPluginManager.java
@@ -643,13 +643,13 @@ public class ExternalPluginManager
 			{
 				if (pluginDescriptor == null)
 				{
-					if (clazz.getSuperclass() == Plugin.class)
+					if (Plugin.class.isAssignableFrom(clazz))
 					{
 						log.warn("Class {} is a plugin, but has no plugin descriptor", clazz);
-						continue;
 					}
+					continue;
 				}
-				else if (clazz.getSuperclass() != Plugin.class)
+				else if (!Plugin.class.isAssignableFrom(clazz))
 				{
 					log.warn("Class {} has plugin descriptor, but is not a plugin", clazz);
 					continue;
@@ -1084,7 +1084,7 @@ public class ExternalPluginManager
 				String lastVersion = lastRelease.version;
 				try
 				{
-					
+
 					RuneLiteSplashScreen.stage(.59, "Updating " + plugin.id + " to version " + lastVersion);
 					boolean updated = updateManager.updatePlugin(plugin.id, lastVersion);
 
diff --git a/runelite-client/src/main/java/net/runelite/client/plugins/PluginManager.java b/runelite-client/src/main/java/net/runelite/client/plugins/PluginManager.java
index 1f519fa4f4..0a58f13cbe 100644
--- a/runelite-client/src/main/java/net/runelite/client/plugins/PluginManager.java
+++ b/runelite-client/src/main/java/net/runelite/client/plugins/PluginManager.java
@@ -356,18 +356,16 @@ public class PluginManager
 
 			if (pluginDescriptor == null)
 			{
-				if (clazz.getSuperclass() == Plugin.class)
+				if (Plugin.class.isAssignableFrom(clazz) && clazz != Plugin.class)
 				{
-					log.warn("Class {} is a plugin, but has no plugin descriptor",
-						clazz);
+					log.warn("Class {} is a plugin, but has no plugin descriptor", clazz);
 				}
 				continue;
 			}
 
-			if (clazz.getSuperclass() != Plugin.class)
+			if (!Plugin.class.isAssignableFrom(clazz))
 			{
-				log.warn("Class {} has plugin descriptor, but is not a plugin",
-					clazz);
+				log.warn("Class {} has plugin descriptor, but is not a plugin", clazz);
 				continue;
 			}