diff --git a/paper-api/src/main/java/org/bukkit/plugin/java/PluginClassLoader.java b/paper-api/src/main/java/org/bukkit/plugin/java/PluginClassLoader.java
index 3be563412..9fc6bd772 100644
--- a/paper-api/src/main/java/org/bukkit/plugin/java/PluginClassLoader.java
+++ b/paper-api/src/main/java/org/bukkit/plugin/java/PluginClassLoader.java
@@ -116,10 +116,14 @@ final class PluginClassLoader extends URLClassLoader {
                     CodeSource source = new CodeSource(url, signers);
 
                     result = defineClass(name, classBytes, 0, classBytes.length, source);
+                }
 
+                if (result == null) {
+                    result = super.findClass(name);
+                }
+
+                if (result != null) {
                     loader.setClass(name, result);
-                } else {
-                    throw new ClassNotFoundException(name);
                 }
             }