diff --git a/src/inference/dev_api/openvino/runtime/exec_model_info.hpp b/src/inference/dev_api/openvino/runtime/exec_model_info.hpp
index 4f1976d671db0f..06e04e8ded985e 100644
--- a/src/inference/dev_api/openvino/runtime/exec_model_info.hpp
+++ b/src/inference/dev_api/openvino/runtime/exec_model_info.hpp
@@ -44,7 +44,7 @@ static const char OUTPUT_PRECISIONS[] = "outputPrecisions";
 
 /**
  * @ingroup ov_dev_exec_model
- * @brief Used to get a value of execution time of the executable primitive, where Mcs = Microseconds.
+ * @brief Used to get a value of execution time of the executable primitive, where Mcs = microseconds (1μs=0.000001s).
  */
 static const char PERF_COUNTER[] = "execTimeMcs";