diff --git a/cpp/tests/unittests/com/google/idea/blaze/cpp/BlazeConfigurationResolverTest.java b/cpp/tests/unittests/com/google/idea/blaze/cpp/BlazeConfigurationResolverTest.java
index fc479a858c6..18d35440897 100644
--- a/cpp/tests/unittests/com/google/idea/blaze/cpp/BlazeConfigurationResolverTest.java
+++ b/cpp/tests/unittests/com/google/idea/blaze/cpp/BlazeConfigurationResolverTest.java
@@ -825,7 +825,7 @@ public void testExternalDependencyResolvedWhenIsPartOfProject() throws IOExcepti
                     "//:toolchain"))
             .build();
 
-    File externalRoot = WorkspaceHelper.getExternalSourceRoot(
+    File externalRoot = WorkspaceHelper.getExternalSourceRoot(project,
         BlazeProjectDataManager.getInstance(project).getBlazeProjectData()).toFile();
 
     File spyExternalDependencyRoot = spy(new File(externalRoot, "external_dependency"));