diff --git a/README.md b/README.md
index fdad119..66a1237 100644
--- a/README.md
+++ b/README.md
@@ -6,5 +6,6 @@ Usage:
   * Example response: `{"printers": ["canon-123", "brother-etc"]}`
 * `print.php?action=print&printer=[printername]`: Print a PDF to the specified printer. The request body shall contain the PDF document.
   * Example curl command: `curl --data-binary "@/home/user/test.pdf" "http://localhost/print.php?action=print&printer=brother-etc"`
+  * Response: `{"printed": true}`
 
 Requires `lp`, `lpstat`, and `pdfinfo` commands to be available.
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