diff --git a/src/plugins/qmldesigner/designercore/metainfo/itemlibraryinfo.cpp b/src/plugins/qmldesigner/designercore/metainfo/itemlibraryinfo.cpp
index abd64928527..7b3059247f3 100644
--- a/src/plugins/qmldesigner/designercore/metainfo/itemlibraryinfo.cpp
+++ b/src/plugins/qmldesigner/designercore/metainfo/itemlibraryinfo.cpp
@@ -225,6 +225,10 @@ QDataStream& operator<<(QDataStream& stream, const ItemLibraryEntry &itemLibrary
 
 QDataStream& operator>>(QDataStream& stream, ItemLibraryEntry &itemLibraryEntry)
 {
+    // Clear containers so that we don't simply append to them in case the object is reused
+    itemLibraryEntry.m_data->hints.clear();
+    itemLibraryEntry.m_data->properties.clear();
+
     stream >> itemLibraryEntry.m_data->name;
     stream >> itemLibraryEntry.m_data->typeName;
     stream >> itemLibraryEntry.m_data->majorVersion;