diff --git a/multigrid/src/parsing.rs b/multigrid/src/parsing.rs
index b3689cb..02ecc02 100644
--- a/multigrid/src/parsing.rs
+++ b/multigrid/src/parsing.rs
@@ -144,7 +144,7 @@ pub fn json_to_grids(
                     int_op,
                 )
             } else if let Some(multigrid) = dir.strip_prefix("multi:") {
-                let grids = multigrid.split(":");
+                let grids = multigrid.split(':');
                 sbp::euler::BoundaryCharacteristic::MultiGrid(
                     grids
                         .map(|g| {
diff --git a/sbp/src/operators.rs b/sbp/src/operators.rs
index 423c1f5..82941c2 100644
--- a/sbp/src/operators.rs
+++ b/sbp/src/operators.rs
@@ -275,7 +275,6 @@ pub(crate) fn diff_op_row(
 
         for (window, f) in prev
             .windows(diag.len())
-            .into_iter()
             .skip(window_elems_to_skip)
             .zip(fut.iter_mut().skip(block.len()))
             .take(nx - 2 * block.len())