1 files changed, 1 insertions, 0 deletions
diff --git a/compiler/src/dotty/tools/dotc/transform/MoveStatics.scala b/compiler/src/dotty/tools/dotc/transform/MoveStatics.scala
index b0ee0930d..652320639 100644
--- a/compiler/src/dotty/tools/dotc/transform/MoveStatics.scala
+++ b/compiler/src/dotty/tools/dotc/transform/MoveStatics.scala
@@ -55,6 +55,7 @@ class MoveStatics extends MiniPhaseTransform with SymTransformer { thisTransform
       }
 
       def move(module: TypeDef, companion: TypeDef): List[Tree] = {
+        assert(companion ne module)
         if (!module.symbol.is(Flags.Module)) move(companion, module)
         else {
           val allMembers =