diff --git a/compiler/src/dotty/tools/dotc/core/tasty/TreeUnpickler.scala b/compiler/src/dotty/tools/dotc/core/tasty/TreeUnpickler.scala
index 4b80768e1322..de13f0eac96a 100644
--- a/compiler/src/dotty/tools/dotc/core/tasty/TreeUnpickler.scala
+++ b/compiler/src/dotty/tools/dotc/core/tasty/TreeUnpickler.scala
@@ -630,8 +630,11 @@ class TreeUnpickler(reader: TastyReader,
             rootd.symbol
           case _ =>
             val completer = adjustIfModule(new Completer(subReader(start, end)))
-            if (isClass)
-              newClassSymbol(ctx.owner, name.asTypeName, flags, completer, privateWithin, coord)
+            if isClass then
+              val compilationUnitInfo = completer match
+                case completer: SymbolLoader => completer.compilationUnitInfo
+                case _ => null
+              newClassSymbol(ctx.owner, name.asTypeName, flags, completer, privateWithin, coord, compilationUnitInfo)
             else
               newSymbol(ctx.owner, name, flags, completer, privateWithin, coord)
         }