diff --git a/src/audio_box.cpp b/src/audio_box.cpp
index 8d45c83bb..4d1f1518f 100644
--- a/src/audio_box.cpp
+++ b/src/audio_box.cpp
@@ -63,9 +63,9 @@ AudioBox::AudioBox(wxWindow *parent, agi::Context *context)
 , audio_open_connection(context->audioController->AddAudioPlayerOpenListener(&AudioBox::OnAudioOpen, this))
 , panel(new wxPanel(this, -1, wxDefaultPosition, wxDefaultSize, wxTAB_TRAVERSAL | wxBORDER_RAISED))
 , audioDisplay(new AudioDisplay(panel, context->audioController.get(), context))
-, HorizontalZoom(new wxSlider(panel, Audio_Horizontal_Zoom, -OPT_GET("Audio/Zoom/Horizontal")->GetInt(), -50, 30, wxDefaultPosition, wxSize(-1, 20), wxSL_VERTICAL|wxSL_BOTH))
-, VerticalZoom(new wxSlider(panel, Audio_Vertical_Zoom, OPT_GET("Audio/Zoom/Vertical")->GetInt(), 0, 100, wxDefaultPosition, wxSize(-1, 20), wxSL_VERTICAL|wxSL_BOTH|wxSL_INVERSE))
-, VolumeBar(new wxSlider(panel, Audio_Volume, OPT_GET("Audio/Volume")->GetInt(), 0, 100, wxDefaultPosition, wxSize(-1, 20), wxSL_VERTICAL|wxSL_BOTH|wxSL_INVERSE))
+, HorizontalZoom(new wxSlider(panel, Audio_Horizontal_Zoom, -OPT_GET("Audio/Zoom/Horizontal")->GetInt(), -50, 30, wxDefaultPosition, wxDefaultSize, wxSL_VERTICAL|wxSL_BOTH))
+, VerticalZoom(new wxSlider(panel, Audio_Vertical_Zoom, OPT_GET("Audio/Zoom/Vertical")->GetInt(), 0, 100, wxDefaultPosition, wxDefaultSize, wxSL_VERTICAL|wxSL_BOTH|wxSL_INVERSE))
+, VolumeBar(new wxSlider(panel, Audio_Volume, OPT_GET("Audio/Volume")->GetInt(), 0, 100, wxDefaultPosition, wxDefaultSize, wxSL_VERTICAL|wxSL_BOTH|wxSL_INVERSE))
 {
 	SetSashVisible(wxSASH_BOTTOM, true);
 	Bind(wxEVT_SASH_DRAGGED, &AudioBox::OnSashDrag, this);