diff --git a/gradle/changelog/diff_command_content.yaml b/gradle/changelog/diff_command_content.yaml
new file mode 100644
index 0000000000..5fa170f92a
--- /dev/null
+++ b/gradle/changelog/diff_command_content.yaml
@@ -0,0 +1,2 @@
+- type: fixed
+  description: Diff command content ([#2036](https://github.com/scm-manager/scm-manager/pull/2036))
diff --git a/scm-core/src/main/java/sonia/scm/repository/api/DiffCommandBuilder.java b/scm-core/src/main/java/sonia/scm/repository/api/DiffCommandBuilder.java
index 9c43cf8737..656329cac4 100644
--- a/scm-core/src/main/java/sonia/scm/repository/api/DiffCommandBuilder.java
+++ b/scm-core/src/main/java/sonia/scm/repository/api/DiffCommandBuilder.java
@@ -110,7 +110,7 @@ public final class DiffCommandBuilder extends AbstractDiffCommandBuilder<DiffCom
    */
   public String getContent() throws IOException {
     try (ByteArrayOutputStream baos = new ByteArrayOutputStream()) {
-      getDiffResult();
+      getDiffResult().accept(baos);
       return baos.toString();
     }
   }