diff --git a/src/shims/unix/foreign_items.rs b/src/shims/unix/foreign_items.rs
index 84e4390cf8..4c43dbd9ab 100644
--- a/src/shims/unix/foreign_items.rs
+++ b/src/shims/unix/foreign_items.rs
@@ -207,7 +207,8 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> {
             "fcntl" => {
                 // `fcntl` is variadic. The argument count is checked based on the first argument
                 // in `this.fcntl()`, so we do not use `check_shim` here.
-                let (fixed, var) = this.check_shim_variadic::<2>(abi, Conv::C, link_name, "fcntl", args)?;
+                let (fixed, var) =
+                    this.check_shim_variadic::<2>(abi, Conv::C, link_name, "fcntl", args)?;
                 let result = this.fcntl(args, fixed, var)?;
                 this.write_scalar(result, dest)?;
             }
@@ -236,7 +237,8 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> {
             "open" | "open64" => {
                 // `open` is variadic, the third argument is only present when the second argument
                 // has O_CREAT (or on linux O_TMPFILE, but miri doesn't support that) set
-                let (fixed, var) = this.check_shim_variadic::<2>(abi, Conv::C, link_name, "open/open64", args)?;
+                let (fixed, var) =
+                    this.check_shim_variadic::<2>(abi, Conv::C, link_name, "open/open64", args)?;
                 let result = this.open(args, fixed, var)?;
                 this.write_scalar(result, dest)?;
             }