diff --git a/projo-template-generation/src/main/java/pro/projo/generation/ProjoTemplateFactoryProcessor.java b/projo-template-generation/src/main/java/pro/projo/generation/ProjoTemplateFactoryProcessor.java
index 36281e9..c2b3486 100644
--- a/projo-template-generation/src/main/java/pro/projo/generation/ProjoTemplateFactoryProcessor.java
+++ b/projo-template-generation/src/main/java/pro/projo/generation/ProjoTemplateFactoryProcessor.java
@@ -146,19 +146,23 @@ private FileObject getTemplateFile(Element element)
         }
     }
 
-    private Collection<? extends Configuration> getConfiguration(TypeMirror type)
+    Collection<? extends Configuration> getConfiguration(TypeMirror type)
     {
         try
         {
             return getClass(type).getDeclaredConstructor().newInstance();
         }
-        catch (@SuppressWarnings("unused") Exception exception)
+        catch (Exception exception)
         {
-            return null;
+            if (exception instanceof RuntimeException)
+            {
+                throw (RuntimeException)exception;
+            }
+            throw new RuntimeException(exception);
         }
     }
 
-    private Class<? extends Collection<? extends Configuration>> getClass(TypeMirror type)
+    Class<? extends Collection<? extends Configuration>> getClass(TypeMirror type)
     {
         try
         {
@@ -166,9 +170,9 @@ private Class<? extends Collection<? extends Configuration>> getClass(TypeMirror
             Class<? extends Collection<? extends Configuration>> configurationClass = (Class<? extends Collection<? extends Configuration>>)Class.forName(type.toString());
             return configurationClass;
         }
-        catch (@SuppressWarnings("unused") ClassNotFoundException classNotFound)
+        catch (ClassNotFoundException classNotFound)
         {
-            return null;
+            throw new RuntimeException(classNotFound);
         }
     }
 }
diff --git a/projo-template-generation/src/test/java/pro/projo/generation/ProjoTemplateFactoryProcessorTest.java b/projo-template-generation/src/test/java/pro/projo/generation/ProjoTemplateFactoryProcessorTest.java
new file mode 100644
index 0000000..4386170
--- /dev/null
+++ b/projo-template-generation/src/test/java/pro/projo/generation/ProjoTemplateFactoryProcessorTest.java
@@ -0,0 +1,56 @@
+//                                                                          //
+// Copyright 2024 Mirko Raner                                               //
+//                                                                          //
+// Licensed under the Apache License, Version 2.0 (the "License");          //
+// you may not use this file except in compliance with the License.         //
+// You may obtain a copy of the License at                                  //
+//                                                                          //
+//     http://www.apache.org/licenses/LICENSE-2.0                           //
+//                                                                          //
+// Unless required by applicable law or agreed to in writing, software      //
+// distributed under the License is distributed on an "AS IS" BASIS,        //
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. //
+// See the License for the specific language governing permissions and      //
+// limitations under the License.                                           //
+//                                                                          //
+package pro.projo.generation;
+
+import java.util.ArrayList;
+import javax.lang.model.type.TypeMirror;
+import org.junit.Test;
+import net.florianschoppmann.java.reflect.ReflectionTypes;
+import pro.projo.template.annotation.Configuration;
+
+public class ProjoTemplateFactoryProcessorTest
+{
+    @Test(expected=RuntimeException.class)
+    public void testGetConfiguration()
+    {
+        ProjoTemplateFactoryProcessor processor = new ProjoTemplateFactoryProcessor();
+        TypeMirror type = ReflectionTypes.getInstance().typeMirror(ConstructorThrows.class);
+        processor.getConfiguration(type);
+    }
+
+    @Test(expected=RuntimeException.class)
+    public void testGetClass()
+    {
+        class Nested extends ArrayList<Configuration>
+        {
+            private static final long serialVersionUID = 3888598709112160435L;
+        }
+        ProjoTemplateFactoryProcessor processor = new ProjoTemplateFactoryProcessor();
+        TypeMirror type = ReflectionTypes.getInstance().typeMirror(Nested.class);
+        processor.getClass(type);
+    }
+}
+
+class ConstructorThrows extends ArrayList<Configuration>
+{
+    private static final long serialVersionUID = 4201658057355742410L;
+
+    @SuppressWarnings("unused")
+    public ConstructorThrows()
+    {
+        throw new UnsupportedOperationException();
+    }
+}