diff --git a/pom.xml b/pom.xml
index 78e5bf45..bb35be88 100644
--- a/pom.xml
+++ b/pom.xml
@@ -52,13 +52,20 @@ http://maven.apache.org/maven-v4_0_0.xsd">
 				<artifactId>maven-compiler-plugin</artifactId>
 				<version>3.8.0</version>
 				<configuration>
-					<compilerArgs>--enable-preview</compilerArgs>
+					<release>19</release>
+					<compilerArgs>
+						--enable-preview
+					</compilerArgs>
 				</configuration>
 			</plugin>
 			<plugin>
 				<groupId>org.antlr</groupId>
 				<artifactId>antlr4-maven-plugin</artifactId>
 				<version>4.8-1</version>
+				<configuration>
+					<visitor>true</visitor>
+					<listener>false</listener>
+				</configuration>
 				<executions>
 					<execution>
 						<id>antlr</id>
@@ -68,7 +75,7 @@ http://maven.apache.org/maven-v4_0_0.xsd">
 					</execution>
 				</executions>
 			</plugin>
-        </plugins>
+    </plugins>
 	</build>
 	<repositories>
 		<repository>
@@ -77,9 +84,8 @@ http://maven.apache.org/maven-v4_0_0.xsd">
 		</repository>
 	</repositories>
 	<properties>
-		<maven.compiler.source>19</maven.compiler.source>
-		<maven.compiler.target>19</maven.compiler.target>
 		<mainClass>de.dhbwstuttgart.core.ConsoleInterface</mainClass>
+		<release>17</release>
 	</properties>
 	<distributionManagement>
 		<repository>
diff --git a/src/test/java/targetast/Fun1$$.java b/src/test/java/targetast/Fun1$$.java
index 882112f2..0af5f216 100644
--- a/src/test/java/targetast/Fun1$$.java
+++ b/src/test/java/targetast/Fun1$$.java
@@ -1,3 +1,5 @@
+package targetast;
+
 public interface Fun1$$<R, T> {
     public R apply(T t);
 }