diff --git a/bin/prettier.js b/bin/prettier.js
index 53ec0ad54..1fc5daabd 100755
--- a/bin/prettier.js
+++ b/bin/prettier.js
@@ -154,7 +154,7 @@ const options = {
 function format(input, opt) {
   if (argv["debug-print-doc"]) {
     const doc = prettier.__debug.printToDoc(input, opt);
-    return prettier.__debug.formatDoc(doc);
+    return { formatted: prettier.__debug.formatDoc(doc) };
   }
 
   if (argv["debug-check"]) {
diff --git a/tests_integration/__tests__/debug-print-doc.js b/tests_integration/__tests__/debug-print-doc.js
new file mode 100644
index 000000000..7e0d0d223
--- /dev/null
+++ b/tests_integration/__tests__/debug-print-doc.js
@@ -0,0 +1,13 @@
+"use strict";
+
+const runPrettier = require("../runPrettier");
+
+test("prints doc with --debug-print-doc", () => {
+  const result = runPrettier("cli/with-shebang", ["--debug-print-doc"], {
+    input: "0"
+  });
+
+  expect(result.stdout).toEqual('["0", ";", hardline, breakParent];\n');
+  expect(result.stderr).toEqual("");
+  expect(result.status).toEqual(0);
+});