diff --git a/sleepyhead/oximeterimport.cpp b/sleepyhead/oximeterimport.cpp
index 8a067ddf..935e44e3 100644
--- a/sleepyhead/oximeterimport.cpp
+++ b/sleepyhead/oximeterimport.cpp
@@ -408,7 +408,7 @@ void OximeterImport::on_fileImportButton_clicked()
 
 	qDebug() << "File Import button clicked";
 	
-    QString filename = QFileDialog::getOpenFileName(nullptr , tr("Select a valid oximetry data file"), documentsFolder, tr("Oximetry Files (*.spo *.spor *.spo2 *.dat)"));
+    QString filename = QFileDialog::getOpenFileName(nullptr , tr("Select a valid oximetry data file"), documentsFolder, tr("Oximetry Files (*.spo *.spor *.spo2 *.SpO2 *.dat)"));
 
     if (filename.isEmpty())
         return;