diff --git a/widget/src/qt/nsFilePicker.cpp b/widget/src/qt/nsFilePicker.cpp
index c3097abd6af..3113c755c6d 100644
--- a/widget/src/qt/nsFilePicker.cpp
+++ b/widget/src/qt/nsFilePicker.cpp
@@ -218,6 +218,7 @@ nsFilePicker::Show(PRInt16 *aReturn)
         break;
     case nsIFilePicker::modeSave:
         mDialog->setFileMode(QFileDialog::AnyFile);
+        mDialog->setAcceptMode(QFileDialog::AcceptSave);
         break;
     case nsIFilePicker::modeGetFolder:
         mDialog->setFileMode(QFileDialog::DirectoryOnly);