diff --git a/smsapp/qml/ConversationList.qml b/smsapp/qml/ConversationList.qml
--- a/smsapp/qml/ConversationList.qml
+++ b/smsapp/qml/ConversationList.qml
@@ -68,7 +68,8 @@
             placeholderText: i18n("Filter...")
             width: parent.width
             onTextChanged: {
-                view.model.filterRegExp = new RegExp(filter.text, "i")
+                view.model.filterCaseSensitivity = Qt.CaseInsensitive;
+                view.model.setFilterFixedString(filter.text);
                 view.currentIndex = 0
             }
             Keys.onUpPressed: view.currentIndex = Math.max(view.currentIndex-1, 0)