diff --git a/compiler/src/dotty/tools/dotc/core/unpickleScala2/Scala2Unpickler.scala b/compiler/src/dotty/tools/dotc/core/unpickleScala2/Scala2Unpickler.scala
index 018d382cdcaf..d90e7b03e3f9 100644
--- a/compiler/src/dotty/tools/dotc/core/unpickleScala2/Scala2Unpickler.scala
+++ b/compiler/src/dotty/tools/dotc/core/unpickleScala2/Scala2Unpickler.scala
@@ -1011,9 +1011,9 @@ class Scala2Unpickler(bytes: Array[Byte], classRoot: ClassDenotation, moduleClas
    */
   protected def deferredAnnot(end: Int)(using Context): Annotation = {
     val start = readIndex
-    val atp = readTypeRef()
     val phase = ctx.phase
-    Annotation.deferred(atp.typeSymbol)(
+    Annotation.deferredSymAndTree(
+        atReadPos(start, () => atPhase(phase)(readTypeRef().typeSymbol)))(
         atReadPos(start, () => atPhase(phase)(readAnnotationContents(end))))
   }
 
diff --git a/sbt-dotty/sbt-test/scala2-compat/i12109/app/App.scala b/sbt-dotty/sbt-test/scala2-compat/i12109/app/App.scala
new file mode 100644
index 000000000000..ca92cbd0db02
--- /dev/null
+++ b/sbt-dotty/sbt-test/scala2-compat/i12109/app/App.scala
@@ -0,0 +1,3 @@
+import i12109.*
+
+def test = JsonReaderDefaultValue
diff --git a/sbt-dotty/sbt-test/scala2-compat/i12109/build.sbt b/sbt-dotty/sbt-test/scala2-compat/i12109/build.sbt
new file mode 100644
index 000000000000..4cc8010e1d38
--- /dev/null
+++ b/sbt-dotty/sbt-test/scala2-compat/i12109/build.sbt
@@ -0,0 +1,13 @@
+val scala3Version = sys.props("plugin.scalaVersion")
+val scala2Version = "2.13.5"
+
+lazy val lib = project.in(file("lib"))
+  .settings(
+    scalaVersion := scala2Version
+  )
+
+lazy val app = project.in(file("app"))
+  .dependsOn(lib)
+  .settings(
+    scalaVersion := scala3Version
+  )
diff --git a/sbt-dotty/sbt-test/scala2-compat/i12109/lib/Lib.scala b/sbt-dotty/sbt-test/scala2-compat/i12109/lib/Lib.scala
new file mode 100644
index 000000000000..db42a2d9a92a
--- /dev/null
+++ b/sbt-dotty/sbt-test/scala2-compat/i12109/lib/Lib.scala
@@ -0,0 +1,10 @@
+package i12109
+
+object JsonReaderDefaultValue extends LowPriorityDefaultValue {
+  class ReaderDefaultValue extends scala.annotation.StaticAnnotation
+}
+
+trait LowPriorityDefaultValue {
+  @JsonReaderDefaultValue.ReaderDefaultValue
+  class NoDefaultValue
+}
diff --git a/sbt-dotty/sbt-test/scala2-compat/i12109/project/plugins.sbt b/sbt-dotty/sbt-test/scala2-compat/i12109/project/plugins.sbt
new file mode 100644
index 000000000000..c17caab2d98c
--- /dev/null
+++ b/sbt-dotty/sbt-test/scala2-compat/i12109/project/plugins.sbt
@@ -0,0 +1 @@
+addSbtPlugin("ch.epfl.lamp" % "sbt-dotty" % sys.props("plugin.version"))
diff --git a/sbt-dotty/sbt-test/scala2-compat/i12109/test b/sbt-dotty/sbt-test/scala2-compat/i12109/test
new file mode 100644
index 000000000000..19aca297fdcf
--- /dev/null
+++ b/sbt-dotty/sbt-test/scala2-compat/i12109/test
@@ -0,0 +1 @@
+> app/compile