diff --git a/compiler/src/dotty/tools/dotc/typer/Namer.scala b/compiler/src/dotty/tools/dotc/typer/Namer.scala
index ecbb48f641cc..e9264366dfc0 100644
--- a/compiler/src/dotty/tools/dotc/typer/Namer.scala
+++ b/compiler/src/dotty/tools/dotc/typer/Namer.scala
@@ -785,6 +785,7 @@ class Namer { typer: Typer =>
 
     protected def localContext(owner: Symbol): FreshContext = ctx.fresh.setOwner(owner).setTree(original)
 
+    /** Stores the latest NotNullInfos (updated by `setNotNullInfos`) */
     private var myNotNullInfos: List[NotNullInfo] | Null = null
 
     /** The context with which this completer was created */