diff --git a/ext/opencv/gsthanddetect.cpp b/ext/opencv/gsthanddetect.cpp
index f85f2c91d5..60fd5be72b 100644
--- a/ext/opencv/gsthanddetect.cpp
+++ b/ext/opencv/gsthanddetect.cpp
@@ -50,7 +50,7 @@
  * <refsect2>
  * <title>Example launch line</title>
  * |[
- * gst-launch-1.0 autovideosrc ! videoconvert ! "video/x-raw, formt=RGB, width=320, height=240" ! \
+ * gst-launch-1.0 autovideosrc ! videoconvert ! "video/x-raw, format=RGB, width=320, height=240" ! \
  * videoscale ! handdetect ! videoconvert ! xvimagesink
  * ]|
  * </refsect2>