diff --git a/src/plugins/bookmarks/bookmarkmanager.cpp b/src/plugins/bookmarks/bookmarkmanager.cpp
index 66aecea2917..d2fef2a0619 100644
--- a/src/plugins/bookmarks/bookmarkmanager.cpp
+++ b/src/plugins/bookmarks/bookmarkmanager.cpp
@@ -438,7 +438,7 @@ QMimeData *BookmarkManager::mimeData(const QModelIndexList &indexes) const
 
 void BookmarkManager::toggleBookmark(const QString &fileName, int lineNumber)
 {
-    if (lineNumber <= 0)
+    if (lineNumber <= 0 || fileName.isEmpty())
         return;
 
     // Remove any existing bookmark on this line