diff --git a/src/Project.cpp b/src/Project.cpp
index dadcd8920..cd24777ed 100644
--- a/src/Project.cpp
+++ b/src/Project.cpp
@@ -3900,9 +3900,14 @@ void AudacityProject::OnTimer(wxTimerEvent& event)
 
    // Check if a warning for missing aliased files should be displayed
    if (gAudioIO->ShouldShowMissingAliasedFileWarning()) {
-      wxString errorMessage = _("One or more external audio files could not be found.\nIt is possible they were moved, deleted, or the drive they were on was unmounted.\nSilence is being substituted for the affected audio.");
+      wxString errorMessage = _("One or more external audio files could not be found.\n"
+                                "It is possible they were moved, deleted, or the drive they "
+                                "were on was unmounted.\n"
+                                "Silence is being substituted for the affected audio.\n"
+                                "Choose File > Check Dependencies to view the "
+                                "original location of the missing files.");
       ShowModelessErrorDialog(this, _("Files Missing"),
-                 errorMessage, wxT("innerlink:wma-proprietary"), true);
+                 errorMessage, wxT(""), true);
       // Only show this warning once per playback.
       gAudioIO->SetMissingAliasedFileWarningShouldShow(false);
    }
diff --git a/src/widgets/ErrorDialog.cpp b/src/widgets/ErrorDialog.cpp
index a079e86ab..f12ca61dd 100644
--- a/src/widgets/ErrorDialog.cpp
+++ b/src/widgets/ErrorDialog.cpp
@@ -70,6 +70,10 @@ ErrorDialog::ErrorDialog(
    const bool Close, const bool modal):
    wxDialog(parent, (wxWindowID)-1, dlogTitle)
 {
+   long buttonMask;
+
+   // only add the help button if we have a URL
+   buttonMask = (helpURL == wxT("")) ? eOkButton : (eHelpButton | eOkButton);
    dhelpURL = helpURL;
    dClose = Close;
    dModal = modal;
@@ -81,7 +85,7 @@ ErrorDialog::ErrorDialog(
       S.SetBorder( 20 );
       S.AddFixedText( message );
       S.SetBorder( 2 );
-      S.AddStandardButtons(eHelpButton | eOkButton);
+      S.AddStandardButtons( buttonMask );
    }
    S.EndVerticalLay();