diff --git a/src/main/java/de/kosit/validationtool/cmd/DefaultNamingStrategy.java b/src/main/java/de/kosit/validationtool/cmd/DefaultNamingStrategy.java
index 35bb045..02f8918 100644
--- a/src/main/java/de/kosit/validationtool/cmd/DefaultNamingStrategy.java
+++ b/src/main/java/de/kosit/validationtool/cmd/DefaultNamingStrategy.java
@@ -7,7 +7,6 @@ import static org.apache.commons.lang3.StringUtils.isNotEmpty;
 import org.apache.commons.io.FilenameUtils;
 import org.apache.commons.lang3.StringUtils;
 
-import lombok.Getter;
 import lombok.Setter;
 
 /**
@@ -15,7 +14,6 @@ import lombok.Setter;
  * 
  * @author Andreas Penski
  */
-@Getter
 @Setter
 public class DefaultNamingStrategy implements NamingStrategy {
 
diff --git a/src/test/java/de/kosit/validationtool/cmd/DefaultNamingStrategyTest.java b/src/test/java/de/kosit/validationtool/cmd/DefaultNamingStrategyTest.java
index 655e8d0..da13c79 100644
--- a/src/test/java/de/kosit/validationtool/cmd/DefaultNamingStrategyTest.java
+++ b/src/test/java/de/kosit/validationtool/cmd/DefaultNamingStrategyTest.java
@@ -58,4 +58,9 @@ public class DefaultNamingStrategyTest {
         strategy.setPrefix(null);
         assertThat(strategy.createName("test.ext")).isEqualTo("test.ext-postfix.xml");
     }
+
+    @Test(expected = IllegalArgumentException.class)
+    public void testEmptyInput() {
+        new DefaultNamingStrategy().createName(null);
+    }
 }