diff --git a/src/librustc_mir/interpret/cast.rs b/src/librustc_mir/interpret/cast.rs
index edddbc885006..1dbf1d094055 100644
--- a/src/librustc_mir/interpret/cast.rs
+++ b/src/librustc_mir/interpret/cast.rs
@@ -110,7 +110,7 @@ impl<'mir, 'tcx, M: Machine<'mir, 'tcx>> InterpCx<'mir, 'tcx, M> {
                 )
         }
 
-        // Handle cast from a univariant (ZST) enum
+        // Handle cast from a univariant (ZST) enum.
         match src.layout.variants {
             layout::Variants::Single { index } => {
                 if let Some(discr) =
diff --git a/src/librustc_mir/interpret/operator.rs b/src/librustc_mir/interpret/operator.rs
index 24bb71241008..02dc3c01036d 100644
--- a/src/librustc_mir/interpret/operator.rs
+++ b/src/librustc_mir/interpret/operator.rs
@@ -303,7 +303,7 @@ impl<'mir, 'tcx, M: Machine<'mir, 'tcx>> InterpCx<'mir, 'tcx, M> {
                 self.binary_int_op(bin_op, l, left.layout, r, right.layout)
             }
             _ if left.layout.ty.is_any_ptr() => {
-                // The RHS type must be the same *or an integer type* (for `Offset`)
+                // The RHS type must be the same *or an integer type* (for `Offset`).
                 assert!(
                     right.layout.ty == left.layout.ty || right.layout.ty.is_integral(),
                     "Unexpected types for BinOp: {:?} {:?} {:?}",