diff --git a/src/main/java/de/avatic/lcc/service/transformer/error/SysErrorTransformer.java b/src/main/java/de/avatic/lcc/service/transformer/error/SysErrorTransformer.java
index 83832dd..c2f39f8 100644
--- a/src/main/java/de/avatic/lcc/service/transformer/error/SysErrorTransformer.java
+++ b/src/main/java/de/avatic/lcc/service/transformer/error/SysErrorTransformer.java
@@ -84,7 +84,7 @@ public class SysErrorTransformer {
     public SysErrorTraceItem toSysErrorTraceItem(StackTraceElement traceElement) {
 
             SysErrorTraceItem item = new SysErrorTraceItem();
-            item.setFile(traceElement.getFileName());
+            item.setFile(traceElement.getFileName() == null ? "na" : traceElement.getFileName());
             item.setLine(traceElement.getLineNumber());
             item.setMethod(traceElement.getMethodName());
             item.setFullPath("at " + traceElement.getClassName() + "." + traceElement.getMethodName());