diff --git a/src/declarativeimports/core/datamodel.cpp b/src/declarativeimports/core/datamodel.cpp
--- a/src/declarativeimports/core/datamodel.cpp
+++ b/src/declarativeimports/core/datamodel.cpp
@@ -64,6 +64,9 @@
 
 QHash<int,QByteArray> SortFilterModel::roleNames() const
 {
+    if (!sourceModel()) {
+        return {};
+    }
     return sourceModel()->roleNames();
 }