diff --git a/rtengine/slicer.cc b/rtengine/slicer.cc
index 40b52525d..badc1b1ee 100644
--- a/rtengine/slicer.cc
+++ b/rtengine/slicer.cc
@@ -24,8 +24,6 @@
 #include <slicer.h>
 #include <gtkmm.h>
 
-using namespace rtengine;
-
 // If no parameter set, everything = 0 -> process all the image
 Block::Block() {
 	posX = 0;
@@ -45,7 +43,7 @@ Block::Block(unsigned int x, unsigned int y, unsigned int w, unsigned int h) {
  * Slice a sub-region to process in blocks who's size is given by the number of processor
  * and the number of pixel per block (and hence the memory footprint)
  */
-Slicer::Slicer(unsigned int imageWidth, unsigned int imageHeight, Block *subRegion, unsigned int pixels, const char* nomFichier) {
+Slicer::Slicer(unsigned int imageWidth, unsigned int imageHeight, Block *subRegion, unsigned int pixels) {
 	// If the sub-region has a portrait shape, X and Y coordinates are swapped for better result
 	// It will be swapped back when sending back the block coordinates
 	region.width = !(subRegion->width) ? imageWidth : subRegion->width;
diff --git a/rtengine/slicer.h b/rtengine/slicer.h
index 3d3968a8d..ac27bca82 100644
--- a/rtengine/slicer.h
+++ b/rtengine/slicer.h
@@ -23,8 +23,6 @@
 //maximum number of pixel per block
 #define PIXELS_PER_BLOCK	250000
 
-namespace rtengine {
-
 /*
  * Used to specify a subregion of an image and to specify a cell in this subregion
  */
@@ -56,10 +54,8 @@ class Slicer {
 	public:
 		unsigned int blockNumber;		// number of block for the sub-region
 		unsigned int maxPixelNumber;	// number of pixel of the biggest block (for memory allocation purpose)
-		Slicer(unsigned int imageWidth, unsigned int imageHeight, Block *subRegion, unsigned int pixels, const char* nomFichier);
+		Slicer(unsigned int imageWidth, unsigned int imageHeight, Block *subRegion, unsigned int pixels);
 		void get_block(unsigned int blockId, Block *block);
 };
 
-};
-
 #endif