diff --git a/src/bindings/python/src/pyopenvino/pyopenvino.cpp b/src/bindings/python/src/pyopenvino/pyopenvino.cpp
index 1e01ed3d37ea70..ee3ef1c8b8144e 100644
--- a/src/bindings/python/src/pyopenvino/pyopenvino.cpp
+++ b/src/bindings/python/src/pyopenvino/pyopenvino.cpp
@@ -196,7 +196,7 @@ PYBIND11_MODULE(_pyopenvino, m) {
             :type model: openvino.runtime.Model
             :param output_model: path to output model file
             :type output_model: Union[str, bytes, pathlib.Path]
-            :param compress_to_fp16: whether to compress floating point weights to FP16 (default: True)
+            :param compress_to_fp16: whether to compress floating point weights to FP16 (default: True). The parameter is ignored for pre-optimized models.
             :type compress_to_fp16: bool
 
             :Examples: