diff --git a/compiler/src/dotty/tools/backend/jvm/GenBCode.scala b/compiler/src/dotty/tools/backend/jvm/GenBCode.scala
index d5c111259f01..8d467529d60e 100644
--- a/compiler/src/dotty/tools/backend/jvm/GenBCode.scala
+++ b/compiler/src/dotty/tools/backend/jvm/GenBCode.scala
@@ -75,7 +75,7 @@ class GenBCode extends Phase { self =>
   }
 
   override def run(using Context): Unit =
-    frontendAccess.frontendSynch {
+    frontendAccess.frontendSynchWithoutContext {
       backendInterface.ctx
       .asInstanceOf[FreshContext]
       .setCompilationUnit(ctx.compilationUnit)
diff --git a/compiler/src/dotty/tools/backend/jvm/PostProcessorFrontendAccess.scala b/compiler/src/dotty/tools/backend/jvm/PostProcessorFrontendAccess.scala
index 43b2f1174a5d..f7955cbb350c 100644
--- a/compiler/src/dotty/tools/backend/jvm/PostProcessorFrontendAccess.scala
+++ b/compiler/src/dotty/tools/backend/jvm/PostProcessorFrontendAccess.scala
@@ -27,6 +27,7 @@ sealed abstract class PostProcessorFrontendAccess(backendInterface: DottyBackend
 
   private val frontendLock: AnyRef = new Object()
   inline final def frontendSynch[T](inline x: Context ?=> T): T = frontendLock.synchronized(x(using backendInterface.ctx))
+  inline final def frontendSynchWithoutContext[T](inline x: T): T = frontendLock.synchronized(x)
   inline def perRunLazy[T](inline init: Context ?=> T): Lazy[T] = new Lazy(init)(using this)
 }