diff --git a/modules/dnn/include/opencv2/dnn/dnn.hpp b/modules/dnn/include/opencv2/dnn/dnn.hpp
index f4efe57fac..e31e89bde5 100644
--- a/modules/dnn/include/opencv2/dnn/dnn.hpp
+++ b/modules/dnn/include/opencv2/dnn/dnn.hpp
@@ -712,9 +712,11 @@ CV__DNN_EXPERIMENTAL_NS_BEGIN
         CV_WRAP void enableFusion(bool fusion);
 
         /** @brief Returns overall time for inference and timings (in ticks) for layers.
+         *
          * Indexes in returned vector correspond to layers ids. Some layers can be fused with others,
-         * in this case zero ticks count will be return for that skipped layers.
-         * @param timings vector for tick timings for all layers.
+         * in this case zero ticks count will be return for that skipped layers. Supported by DNN_BACKEND_OPENCV on DNN_TARGET_CPU only.
+         *
+         * @param[out] timings vector for tick timings for all layers.
          * @return overall ticks for model inference.
          */
         CV_WRAP int64 getPerfProfile(CV_OUT std::vector<double>& timings);