diff --git a/src/position.hpp b/src/position.hpp
index 69c2154f10..295c6b2e97 100644
--- a/src/position.hpp
+++ b/src/position.hpp
@@ -22,12 +22,12 @@ using namespace std;
 // to refactor -- can always eliminate later
 class position_t {
 public:
-    position_t() = default;
-    position_t(const position_t&) = default;
-    position_t(position_t&&) = default;
+    position_t() noexcept = default;
+    position_t(const position_t&) noexcept = default;
+    position_t(position_t&&) noexcept = default;
     ~position_t() = default;
-    position_t& operator=(const position_t&) = default;
-    position_t& operator=(position_t&&) = default;
+    position_t& operator=(const position_t&) noexcept = default;
+    position_t& operator=(position_t&&) noexcept = default;
     inline int64_t node_id() const;
     inline void set_node_id(int64_t i);
     inline int64_t offset() const;