diff --git a/pkg/analyzer/lib/src/dart/analysis/driver.dart b/pkg/analyzer/lib/src/dart/analysis/driver.dart
index 69040333d01..6677376eb61 100644
--- a/pkg/analyzer/lib/src/dart/analysis/driver.dart
+++ b/pkg/analyzer/lib/src/dart/analysis/driver.dart
@@ -177,8 +177,9 @@ class AnalysisDriver {
   AnalysisStatus _currentStatus = AnalysisStatus.IDLE;
 
   AnalysisDriver(this._logger, this._resourceProvider, this._byteStore,
-      this._contentCache, this._sourceFactory, this._analysisOptions) {
-    _sdkBundle = _sourceFactory.dartSdk.getLinkedBundle();
+      this._contentCache, SourceFactory sourceFactory, this._analysisOptions)
+      : _sourceFactory = sourceFactory.clone() {
+    _sdkBundle = sourceFactory.dartSdk.getLinkedBundle();
   }
 
   /**