diff --git a/plugins/DigitalLibrary/resources/qml/SaveProjectFilesPage.qml b/plugins/DigitalLibrary/resources/qml/SaveProjectFilesPage.qml
index 30e3513019..d8ae78d96d 100644
--- a/plugins/DigitalLibrary/resources/qml/SaveProjectFilesPage.qml
+++ b/plugins/DigitalLibrary/resources/qml/SaveProjectFilesPage.qml
@@ -200,7 +200,7 @@ Item
         anchors.bottom: parent.bottom
         anchors.right: parent.right
         text: "Save"
-        enabled: (asProjectCheckbox.checked || asSlicedCheckbox.checked) && dfFilenameTextfield.text.length >= 1
+        enabled: (asProjectCheckbox.checked || asSlicedCheckbox.checked) && dfFilenameTextfield.text.length >= 1 && dfFilenameTextfield.state !== 'invalid'
 
         onClicked:
         {