diff --git a/src/lib.rs b/src/lib.rs
index ca746de..429260c 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -372,7 +372,9 @@ impl<'a> TypeLayoutGraph<'a> {
 
         while i < self.tys.len() {
             // The first free slot can be used to insert the ty
-            let Some(cached_ty) = self.tys[i] else {
+            let cached_ty = if let Some(cached_ty) = self.tys[i] {
+                cached_ty
+            } else {
                 self.tys[i] = Some(ty);
 
                 return true;