diff --git a/src/pathfinder/yapf/yapf_base.hpp b/src/pathfinder/yapf/yapf_base.hpp
--- a/src/pathfinder/yapf/yapf_base.hpp
+++ b/src/pathfinder/yapf/yapf_base.hpp
@@ -317,7 +317,7 @@ public:
 	void DumpBase(DumpTarget &dmp) const
 	{
 		dmp.WriteStructT("m_nodes", &m_nodes);
-		dmp.WriteLine("m_num_steps = %d", m_num_steps);
+		dmp.WriteValue("m_num_steps", m_num_steps);
 	}
 
 	/* methods that should be implemented at derived class Types::Tpf (derived from CYapfBaseT) */