diff --git a/jmh-core/src/main/java/org/openjdk/jmh/runner/OutputFormatAdapter.java b/jmh-core/src/main/java/org/openjdk/jmh/runner/OutputFormatAdapter.java
index 88464020..8c5c9a43 100644
--- a/jmh-core/src/main/java/org/openjdk/jmh/runner/OutputFormatAdapter.java
+++ b/jmh-core/src/main/java/org/openjdk/jmh/runner/OutputFormatAdapter.java
@@ -29,7 +29,7 @@
 import java.io.IOException;
 import java.io.OutputStream;
 
-class OutputFormatAdapter extends OutputStream {
+public class OutputFormatAdapter extends OutputStream {
     private final OutputFormat out;
 
     public OutputFormatAdapter(OutputFormat out) {