diff --git a/src/structs/dmat.rs b/src/structs/dmat.rs
index c93fb012..af49f97a 100644
--- a/src/structs/dmat.rs
+++ b/src/structs/dmat.rs
@@ -128,7 +128,7 @@ impl<N: Clone> DMat<N> {
         DMat {
             nrows: nrows,
             ncols: ncols,
-            mij:   Vec::from_slice(vec)
+            mij:   vec.to_vec()
         }
     }
 }
diff --git a/src/structs/dvec.rs b/src/structs/dvec.rs
index 500147a6..c300a3d6 100644
--- a/src/structs/dvec.rs
+++ b/src/structs/dvec.rs
@@ -46,7 +46,7 @@ impl<N: Clone> DVec<N> {
         assert!(dim <= vec.len());
 
         DVec {
-            at: Vec::from_slice(vec.slice_to(dim))
+            at: vec.slice_to(dim).to_vec()
         }
     }
 }