diff --git a/swift/src/IceImpl/DispatchAdapter.mm b/swift/src/IceImpl/DispatchAdapter.mm
index 51e42baae14..61d55fd646e 100644
--- a/swift/src/IceImpl/DispatchAdapter.mm
+++ b/swift/src/IceImpl/DispatchAdapter.mm
@@ -61,7 +61,7 @@
     ICEObjectAdapter* adapter = [ICEObjectAdapter getHandle:current.adapter];
     ICEConnection* con = [ICEConnection getHandle:current.con];
 
-    // Both are null or both are non-null
+    // Both are null (colloc) or both are non-null (non-colloc).
     assert((current.con && con) || (!current.con && !con));
 
     @autoreleasepool