diff --git a/gtsam/linear/IterativeSolver.h b/gtsam/linear/IterativeSolver.h
index 3c397c9e9..d6e1b6e98 100644
--- a/gtsam/linear/IterativeSolver.h
+++ b/gtsam/linear/IterativeSolver.h
@@ -106,9 +106,9 @@ namespace gtsam {
     typedef boost::tuple<Key,size_t,Key> Base;
     KeyInfoEntry(){}
     KeyInfoEntry(size_t idx, size_t d, Key start) : Base(idx, d, start) {}
-    const size_t index() const { return this->get<0>(); }
-    const size_t dim() const { return this->get<1>(); }
-    const size_t colstart() const { return this->get<2>(); }
+    size_t index() const { return this->get<0>(); }
+    size_t dim() const { return this->get<1>(); }
+    size_t colstart() const { return this->get<2>(); }
   };
 
   /************************************************************************************/