diff --git a/docs/configuration.md b/docs/configuration.md
index 4b865bcf..d5bd5cdb 100644
--- a/docs/configuration.md
+++ b/docs/configuration.md
@@ -90,7 +90,7 @@ Also you may want imgproxy to respond with the same error message that it writes
   * `7`: Table from A Visual Detection Model for DCT Coefficient Quantization (1993);
   * `8`: Table from An Improved Detection Model for DCT Coefficient Quantization (1993).
 
-**Note:** `IMGPROXY_JPEG_TRELLIS_QUANT`, `IMGPROXY_JPEG_OVERSHOOT_DERINGING`, `IMGPROXY_JPEG_OPTIMIZE_SCANS`, and `IMGPROXY_JPEG_QUANT_TABLE` require libvips to be built with [MozJPEG](https://github.com/mozilla/mozjpeg) since standard libjpeg ddoesn't support those optimizations.
+**Note:** `IMGPROXY_JPEG_TRELLIS_QUANT`, `IMGPROXY_JPEG_OVERSHOOT_DERINGING`, `IMGPROXY_JPEG_OPTIMIZE_SCANS`, and `IMGPROXY_JPEG_QUANT_TABLE` require libvips to be built with [MozJPEG](https://github.com/mozilla/mozjpeg) since standard libjpeg doesn't support those optimizations.
 
 ### Advanced PNG compression