diff --git a/builder/src/main/java/net/kemitix/checkstyle/ruleset/builder/ReadmeWriter.java b/builder/src/main/java/net/kemitix/checkstyle/ruleset/builder/ReadmeWriter.java
index 3cc8ae5..63653c4 100644
--- a/builder/src/main/java/net/kemitix/checkstyle/ruleset/builder/ReadmeWriter.java
+++ b/builder/src/main/java/net/kemitix/checkstyle/ruleset/builder/ReadmeWriter.java
@@ -32,7 +32,6 @@ import java.nio.file.Path;
 import java.nio.file.StandardOpenOption;
 import java.util.function.Predicate;
 import java.util.stream.Collectors;
-import java.util.stream.Stream;
 
 /**
  * Writes the README file.
@@ -95,9 +94,7 @@ class ReadmeWriter implements CommandLineRunner {
     }
 
     private String readFile(final Path file) throws IOException {
-        try (Stream<String> lines = Files.lines(file, StandardCharsets.UTF_8)) {
-            return lines.collect(Collectors.joining(NEWLINE));
-        }
+        return String.join(NEWLINE, Files.readAllLines(file, StandardCharsets.UTF_8));
     }
 
 }