diff --git a/src/base/cg.rs b/src/base/cg.rs
index 5883e710..2787e80b 100644
--- a/src/base/cg.rs
+++ b/src/base/cg.rs
@@ -294,7 +294,8 @@ impl<N: Scalar + Ring, D: DimName, S: StorageMut<N, D, D>> SquareMatrix<N, D, S>
     {
         for i in 0..D::dim() {
             for j in 0..D::dim() - 1 {
-                self[(j, i)] += shift[j] * self[(D::dim() - 1, i)];
+                let add = shift[j] * self[(D::dim() - 1, i)];
+                self[(j, i)] += add;
             }
         }
     }
diff --git a/src/base/edition.rs b/src/base/edition.rs
index 32e2c1aa..d7aba78f 100644
--- a/src/base/edition.rs
+++ b/src/base/edition.rs
@@ -58,7 +58,7 @@ impl<N: Scalar + Zero, R: Dim, C: Dim, S: Storage<N, R, C>> Matrix<N, R, C, S> {
         for j in 0..ncols.value() {
             // FIXME: use unchecked column indexing
             let mut res = res.column_mut(j);
-            let mut src = self.column(j);
+            let src = self.column(j);
 
             for (destination, source) in irows.clone().enumerate() {
                 unsafe {