1 files changed, 4 insertions, 0 deletions
diff --git a/platform/lang-impl/src/com/intellij/find/impl/FindInProjectTask.java b/platform/lang-impl/src/com/intellij/find/impl/FindInProjectTask.java
index aa344c44be47..59adf1e62bd0 100644
--- a/platform/lang-impl/src/com/intellij/find/impl/FindInProjectTask.java
+++ b/platform/lang-impl/src/com/intellij/find/impl/FindInProjectTask.java
@@ -290,6 +290,10 @@ class FindInProjectTask {
       for (VirtualFile file : getLocalScopeFiles((LocalSearchScope)customScope)) {
         iterator.processFile(file);
       }
+    } else if (customScope instanceof Iterable) {  // GlobalSearchScope can span files out of project roots e.g. FileScope / FilesScope
+      for (VirtualFile file : (Iterable<VirtualFile>)customScope) {
+        iterator.processFile(file);
+      }
     }
     else if (myPsiDirectory != null) {
       ApplicationManager.getApplication().runReadAction(new Runnable() {