diff --git a/src/LabelTrack.cpp b/src/LabelTrack.cpp
index 9cc3f0e48..db5dd793d 100644
--- a/src/LabelTrack.cpp
+++ b/src/LabelTrack.cpp
@@ -2165,7 +2165,7 @@ void LabelTrack::Import(wxTextFile & in)
          LabelStruct l { LabelStruct::Import(in, index) };
          mLabels.push_back(l);
       }
-      catch(const LabelStruct::BadFormatException&l) {}
+      catch(const LabelStruct::BadFormatException&) {}
    }
    SortLabels();
 }
diff --git a/src/effects/Contrast.cpp b/src/effects/Contrast.cpp
index f7312b1c6..f621d5e4c 100644
--- a/src/effects/Contrast.cpp
+++ b/src/effects/Contrast.cpp
@@ -331,7 +331,7 @@ void ContrastDialog::OnClose(wxCommandEvent & WXUNUSED(event))
    Show(false);
 }
 
-void ContrastDialog::OnGetForeground(wxCommandEvent & event)
+void ContrastDialog::OnGetForeground(wxCommandEvent & /*event*/)
 {
    AudacityProject *p = GetActiveProject();
    SelectedTrackListOfKindIterator iter(Track::Wave, p->GetTracks());
@@ -347,7 +347,7 @@ void ContrastDialog::OnGetForeground(wxCommandEvent & event)
    results();
 }
 
-void ContrastDialog::OnGetBackground(wxCommandEvent & event)
+void ContrastDialog::OnGetBackground(wxCommandEvent & /*event*/)
 {
    AudacityProject *p = GetActiveProject();
    SelectedTrackListOfKindIterator iter(Track::Wave, p->GetTracks());