diff --git a/java/systemserver_classpath_fragment.go b/java/systemserver_classpath_fragment.go
index 252c6151f..ffcd07917 100644
--- a/java/systemserver_classpath_fragment.go
+++ b/java/systemserver_classpath_fragment.go
@@ -127,6 +127,11 @@ type systemServerClasspathFragmentContentDependencyTag struct {
 	blueprint.BaseDependencyTag
 }
 
+// The systemserverclasspath_fragment contents must never depend on prebuilts.
+func (systemServerClasspathFragmentContentDependencyTag) ReplaceSourceWithPrebuilt() bool {
+	return false
+}
+
 // Contents of system server fragments in an apex are considered to be directly in the apex, as if
 // they were listed in java_libs.
 func (systemServerClasspathFragmentContentDependencyTag) CopyDirectlyInAnyApex() {}