diff --git a/languages/clang/duchain/parsesession.cpp b/languages/clang/duchain/parsesession.cpp
--- a/languages/clang/duchain/parsesession.cpp
+++ b/languages/clang/duchain/parsesession.cpp
@@ -80,6 +80,10 @@
                  const Path::List& includes, const char* cliSwitch)
 {
     foreach (const Path& url, includes) {
+        if (url.isEmpty()) {
+            continue;
+        }
+        
         QFileInfo info(url.toLocalFile());
         QByteArray path = url.toLocalFile().toUtf8();