diff --git a/extras/Demo/Source/Demos/AudioSynthesiserDemo.cpp b/extras/Demo/Source/Demos/AudioSynthesiserDemo.cpp
index f885ff9b81..2548208c31 100644
--- a/extras/Demo/Source/Demos/AudioSynthesiserDemo.cpp
+++ b/extras/Demo/Source/Demos/AudioSynthesiserDemo.cpp
@@ -32,8 +32,8 @@ struct SineWaveSound : public SynthesiserSound
 {
     SineWaveSound() {}
 
-    bool appliesToNote (const int /*midiNoteNumber*/)           { return true; }
-    bool appliesToChannel (const int /*midiChannel*/)           { return true; }
+    bool appliesToNote (int /*midiNoteNumber*/)           { return true; }
+    bool appliesToChannel (int /*midiChannel*/)           { return true; }
 };
 
 
diff --git a/extras/audio plugin demo/Source/PluginProcessor.cpp b/extras/audio plugin demo/Source/PluginProcessor.cpp
index 913df37879..e5c60e2de9 100644
--- a/extras/audio plugin demo/Source/PluginProcessor.cpp	
+++ b/extras/audio plugin demo/Source/PluginProcessor.cpp	
@@ -21,8 +21,8 @@ class SineWaveSound : public SynthesiserSound
 public:
     SineWaveSound() {}
 
-    bool appliesToNote (const int /*midiNoteNumber*/) override  { return true; }
-    bool appliesToChannel (const int /*midiChannel*/) override  { return true; }
+    bool appliesToNote (int /*midiNoteNumber*/) override  { return true; }
+    bool appliesToChannel (int /*midiChannel*/) override  { return true; }
 };
 
 //==============================================================================
diff --git a/modules/juce_audio_basics/synthesisers/juce_Synthesiser.h b/modules/juce_audio_basics/synthesisers/juce_Synthesiser.h
index a43d614691..a704b5fcd5 100644
--- a/modules/juce_audio_basics/synthesisers/juce_Synthesiser.h
+++ b/modules/juce_audio_basics/synthesisers/juce_Synthesiser.h
@@ -55,14 +55,14 @@ public:
         The Synthesiser will use this information when deciding which sounds to trigger
         for a given note.
     */
-    virtual bool appliesToNote (const int midiNoteNumber) = 0;
+    virtual bool appliesToNote (int midiNoteNumber) = 0;
 
     /** Returns true if the sound should be triggered by midi events on a given channel.
 
         The Synthesiser will use this information when deciding which sounds to trigger
         for a given note.
     */
-    virtual bool appliesToChannel (const int midiChannel) = 0;
+    virtual bool appliesToChannel (int midiChannel) = 0;
 
     /** The class is reference-counted, so this is a handy pointer class for it. */
     typedef ReferenceCountedObjectPtr<SynthesiserSound> Ptr;
diff --git a/modules/juce_audio_formats/sampler/juce_Sampler.cpp b/modules/juce_audio_formats/sampler/juce_Sampler.cpp
index 475b50af23..4e7583e0a6 100644
--- a/modules/juce_audio_formats/sampler/juce_Sampler.cpp
+++ b/modules/juce_audio_formats/sampler/juce_Sampler.cpp
@@ -59,12 +59,12 @@ SamplerSound::~SamplerSound()
 {
 }
 
-bool SamplerSound::appliesToNote (const int midiNoteNumber)
+bool SamplerSound::appliesToNote (int midiNoteNumber)
 {
     return midiNotes [midiNoteNumber];
 }
 
-bool SamplerSound::appliesToChannel (const int /*midiChannel*/)
+bool SamplerSound::appliesToChannel (int /*midiChannel*/)
 {
     return true;
 }
diff --git a/modules/juce_audio_formats/sampler/juce_Sampler.h b/modules/juce_audio_formats/sampler/juce_Sampler.h
index f77a9b8d60..f801bf2329 100644
--- a/modules/juce_audio_formats/sampler/juce_Sampler.h
+++ b/modules/juce_audio_formats/sampler/juce_Sampler.h
@@ -82,8 +82,8 @@ public:
 
 
     //==============================================================================
-    bool appliesToNote (const int midiNoteNumber) override;
-    bool appliesToChannel (const int midiChannel) override;
+    bool appliesToNote (int midiNoteNumber) override;
+    bool appliesToChannel (int midiChannel) override;
 
 
 private: