diff --git a/rtengine/rawimagesource.cc b/rtengine/rawimagesource.cc
index f7f4ec36e..29481fa58 100644
--- a/rtengine/rawimagesource.cc
+++ b/rtengine/rawimagesource.cc
@@ -33,8 +33,6 @@
 #include "dcp.h"
 #include "rt_math.h"
 #include "improcfun.h"
-#define BENCHMARK
-#include "StopWatch.h"
 #ifdef _OPENMP
 #include <omp.h>
 #endif
@@ -3546,7 +3544,6 @@ void RawImageSource::processFalseColorCorrectionThread  (Imagefloat* im, array2D
 // correction_YIQ_LQ
 void RawImageSource::processFalseColorCorrection  (Imagefloat* im, const int steps)
 {
-    BENCHFUN
 
     if (im->height < 4 || steps < 1) {
         return;
diff --git a/rtengine/rawimagesource.h b/rtengine/rawimagesource.h
index 567c78442..124aa22d9 100644
--- a/rtengine/rawimagesource.h
+++ b/rtengine/rawimagesource.h
@@ -209,7 +209,7 @@ protected:
     void processFalseColorCorrection (Imagefloat* i, const int steps);
     inline  void convert_row_to_YIQ (const float* const r, const float* const g, const float* const b, float* Y, float* I, float* Q, const int W);
     inline  void convert_row_to_RGB (float* r, float* g, float* b, const float* const Y, const float* const I, const float* const Q, const int W);
-    inline  void convert_to_RGB (float &r, float &g, float &b, const float &Y, const float &I, const float &Q);
+    inline  void convert_to_RGB (float &r, float &g, float &b, const float Y, const float I, const float Q);
 
     inline  void convert_to_cielab_row  (float* ar, float* ag, float* ab, float* oL, float* oa, float* ob);
     inline  void interpolate_row_g      (float* agh, float* agv, int i);
diff --git a/rtengine/rawimagesource_i.h b/rtengine/rawimagesource_i.h
index 17bc8368a..f5685b0ef 100644
--- a/rtengine/rawimagesource_i.h
+++ b/rtengine/rawimagesource_i.h
@@ -51,7 +51,7 @@ inline void RawImageSource::convert_row_to_RGB (float* r, float* g, float* b, co
     }
 }
 
-inline void RawImageSource::convert_to_RGB (float &r, float &g, float &b, const float &Y, const float &I, const float &Q)
+inline void RawImageSource::convert_to_RGB (float &r, float &g, float &b, const float Y, const float I, const float Q)
 {
     r = Y + 0.956f * I + 0.621f * Q;
     g = Y - 0.272f * I - 0.647f * Q;