diff --git a/src/libs/cplusplus/CppDocument.cpp b/src/libs/cplusplus/CppDocument.cpp
index 305f8a39beb8421fa70ea76d586a60c8a033c9c0..b9eb925676864b2bffe7dce58f79ff157a3bf560 100644
--- a/src/libs/cplusplus/CppDocument.cpp
+++ b/src/libs/cplusplus/CppDocument.cpp
@@ -506,7 +506,7 @@ QSharedPointer<NamespaceBinding> Snapshot::globalNamespaceBinding(Document::Ptr
 
 Document::Ptr Snapshot::document(const QString &fileName) const
 {
-    return _documents.value(QDir::cleanPath(fileName));
+    return _documents.value(fileName);
 }
 
 Snapshot Snapshot::simplified(Document::Ptr doc) const