diff --git a/source/SoundTouch/3dnow_win.cpp b/source/SoundTouch/3dnow_win.cpp
index 56fa103..aa3a644 100644
--- a/source/SoundTouch/3dnow_win.cpp
+++ b/source/SoundTouch/3dnow_win.cpp
@@ -220,7 +220,7 @@ void FIRFilter3DNow::setCoefficients(const float *coeffs, uint newLength, uint u
 
 
 // 3DNow!-optimized version of the filter routine for stereo sound
-uint FIRFilter3DNow::evaluateFilterStereo(float *dest, const float *src, const uint numSamples) const
+uint FIRFilter3DNow::evaluateFilterStereo(float *dest, const float *src, uint numSamples) const
 {
     float *filterCoeffsLocal = filterCoeffsAlign;
     uint count = (numSamples - length) & (uint)-2;
diff --git a/source/SoundTouch/AAFilter.cpp b/source/SoundTouch/AAFilter.cpp
index 33b34ae..191b97b 100644
--- a/source/SoundTouch/AAFilter.cpp
+++ b/source/SoundTouch/AAFilter.cpp
@@ -86,7 +86,7 @@ void AAFilter::setCutoffFreq(double newCutoffFreq)
 
 
 // Sets number of FIR filter taps
-void AAFilter::setLength(const uint newLength)
+void AAFilter::setLength(uint newLength)
 {
     length = newLength;
     calculateCoeffs();
diff --git a/source/SoundTouch/RateTransposer.cpp b/source/SoundTouch/RateTransposer.cpp
index a5e3299..23eafa5 100644
--- a/source/SoundTouch/RateTransposer.cpp
+++ b/source/SoundTouch/RateTransposer.cpp
@@ -145,7 +145,7 @@ RateTransposer::~RateTransposer()
 
 
 /// Enables/disables the anti-alias filter. Zero to disable, nonzero to enable
-void RateTransposer::enableAAFilter(const BOOL newMode)
+void RateTransposer::enableAAFilter(BOOL newMode)
 {
     bUseAAFilter = newMode;
 }
diff --git a/source/SoundTouch/mmx_optimized.cpp b/source/SoundTouch/mmx_optimized.cpp
index cf5e4e0..8096593 100644
--- a/source/SoundTouch/mmx_optimized.cpp
+++ b/source/SoundTouch/mmx_optimized.cpp
@@ -247,7 +247,7 @@ void FIRFilterMMX::setCoefficients(const short *coeffs, uint newLength, uint uRe
 
 
 // mmx-optimized version of the filter routine for stereo sound
-uint FIRFilterMMX::evaluateFilterStereo(short *dest, const short *src, const uint numSamples) const
+uint FIRFilterMMX::evaluateFilterStereo(short *dest, const short *src, uint numSamples) const
 {
     // Create stack copies of the needed member variables for asm routines :
     uint i, j;