diff --git a/src/core/src/op/proposal.cpp b/src/core/src/op/proposal.cpp
index 96d094303fc..18941d3e014 100644
--- a/src/core/src/op/proposal.cpp
+++ b/src/core/src/op/proposal.cpp
@@ -98,6 +98,7 @@ void op::v4::Proposal::validate_and_infer_types() {
     const auto& input0_type = get_input_element_type(0);
     set_output_type(0, input0_type, output_shapes[0]);
     set_output_type(1, input0_type, output_shapes[1]);
+    m_attrs.infer_probs = true;  // Proposal v4 requires default true of infer_probs so output_1 has valid data.
 }
 
 std::shared_ptr<Node> op::v4::Proposal::clone_with_new_inputs(const OutputVector& new_args) const {