diff --git a/crates/objc2-encode/src/encoding.rs b/crates/objc2-encode/src/encoding.rs
index 0404f5b61..ebdf6a16d 100644
--- a/crates/objc2-encode/src/encoding.rs
+++ b/crates/objc2-encode/src/encoding.rs
@@ -129,13 +129,13 @@ pub enum Encoding {
     /// It is not uncommon for the name to be `"?"`.
     ///
     /// Corresponds to the `"{" name "=" fields... "}"` code.
-    Struct(&'static str, &'static [Encoding]),
+    Struct(&'static str, Option<&'static [Encoding]>),
     /// A union with the given name and fields.
     ///
     /// The order of the fields must match the order of the order in this.
     ///
     /// Corresponds to the `"(" name "=" fields... ")"` code.
-    Union(&'static str, &'static [Encoding]),
+    Union(&'static str, Option<&'static [Encoding]>),
     // TODO: "Vector" types have the '!' encoding, but are not implemented in
     // clang
 
@@ -560,6 +560,13 @@ mod tests {
             Encoding::Struct("_abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789", &[]);
             "{_abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789=}";
         }
+
+        fn cgl_context_obj() {
+            Encoding::Pointer(&Encoding::Struct("_CGLContextObject", &[]));
+            "^{_CGLContextObject=}";
+            "^{_CGLContextObject=^{__GLIContextRec}{__GLIFunctionDispatchRec=^?^?^?^?^?}^{_CGLPrivateObject}^v}";
+            !"^{SomeOtherStruct=}";
+        }
     }
 
     #[test]
diff --git a/crates/objc2-encode/src/helper.rs b/crates/objc2-encode/src/helper.rs
index aa0a09258..174786cb5 100644
--- a/crates/objc2-encode/src/helper.rs
+++ b/crates/objc2-encode/src/helper.rs
@@ -126,7 +126,7 @@ pub(crate) fn compare_encodings<E1: EncodingType, E2: EncodingType>(
                     // Note that this may be confusing, since a `Pointer` to
                     // the two containers might suddenly start comparing
                     // equal, but
-                    _ => false,
+                    _ => true,
                 }
         }
         (_, _) => false,