diff --git a/SpiralSound/Plugins/MixSwitchPlugin/MixSwitchPlugin.C b/SpiralSound/Plugins/MixSwitchPlugin/MixSwitchPlugin.C
index cb5e82b..99b6253 100644
--- a/SpiralSound/Plugins/MixSwitchPlugin/MixSwitchPlugin.C
+++ b/SpiralSound/Plugins/MixSwitchPlugin/MixSwitchPlugin.C
@@ -73,7 +73,7 @@ void MixSwitchPlugin::ExecuteCommands () {
   }
 }
 
-void MixSwitchPlugin::CreatePorts (int n = 2, bool AddPorts = false) {
+void MixSwitchPlugin::CreatePorts (int n, bool AddPorts) {
   int c;
   m_PluginInfo.NumInputs = 2 + n;
   m_PluginInfo.PortTips.push_back ("CV");
diff --git a/SpiralSound/Plugins/SequencerPlugin/SequencerPlugin.C b/SpiralSound/Plugins/SequencerPlugin/SequencerPlugin.C
index ccfa0f5..60a36bf 100644
--- a/SpiralSound/Plugins/SequencerPlugin/SequencerPlugin.C
+++ b/SpiralSound/Plugins/SequencerPlugin/SequencerPlugin.C
@@ -150,7 +150,7 @@ ostream &operator<<(ostream &s, Pattern &o)
 
 //////////////////////////////////////////////////////////////////////////
 
-Sequence::Sequence(float st=0, int pat=0)
+Sequence::Sequence(float st, int pat)
 {
 	m_StartTime=st;
 	m_Pattern=pat;
diff --git a/SpiralSound/Plugins/Widgets/Fl_VU_Meter.cxx b/SpiralSound/Plugins/Widgets/Fl_VU_Meter.cxx
index 1e8674d..55a0dad 100644
--- a/SpiralSound/Plugins/Widgets/Fl_VU_Meter.cxx
+++ b/SpiralSound/Plugins/Widgets/Fl_VU_Meter.cxx
@@ -2,7 +2,7 @@
 #include "Fl_VU_Meter.h"
 #include <FL/fl_draw.H>
 
-Fl_VU_Meter::Fl_VU_Meter (int x, int y, int w, int h, const char *l = 0) :
+Fl_VU_Meter::Fl_VU_Meter (int x, int y, int w, int h, const char *l) :
 Fl_Progress (x, y, w, h, l) {
 }