diff --git a/src/main/java/org/ids_mannheim/TotalNGrams.java b/src/main/java/org/ids_mannheim/TotalNGrams.java
index 717fc08..afd0670 100644
--- a/src/main/java/org/ids_mannheim/TotalNGrams.java
+++ b/src/main/java/org/ids_mannheim/TotalNGrams.java
@@ -184,10 +184,9 @@
         if (!sort) {
             logger.info("Writing unsorted frequency table.");
             System.err.println("Writing unsorted frequency table.");
-            map.entrySet()
-                    .forEach(entry -> output_stream.println(new StringBuilder(entry.getKey())
-                            .append('\t')
-                            .append(Integer.toUnsignedString(entry.getValue().get()))));
+            map.forEach((key, value) -> output_stream.println(key +
+                    '\t' +
+                    Integer.toUnsignedString(value.get())));
         } else {
             logger.info("Sorting and writing frequency table.");
             System.err.println("Sorting and writing frequency table.");