diff --git a/src/common.c b/src/common.c
index 97c0938..ca30c08 100644
--- a/src/common.c
+++ b/src/common.c
@@ -106,24 +106,25 @@ darray* imgToZones(Image* t_img) {
 }
 
 void compress(const char *input_file) {
-  Image* img;
+  Image *img;
   darray *zones;
   img = newImage();
   imageLoadPPM(input_file, img);
   zones = imgToZones(img);
 
-  printf("Detected %zu zones\n", darraySize(zones));
-  for(size_t i = 0; i < darraySize(zones); ++i) {
-    Zone* zone = darrayGet(zones, i);
-    printf("\n=== Zone %zu (%d %d %d) ===\n", i, zone->r, zone->g, zone->b);
-    for(size_t j = 0; j < darraySize(zone->segments); ++j) {
-      Segment* segm = darrayGet(zone->segments, j);
-      printf("[%d: %d, %d]\t", segm->y, segm->xg, segm->xd);
+  /* print segments for debug ************************************************/
+  DEBUG {
+    printf("Detected %zu zones\n", darraySize(zones));
+    for (size_t i = 0; i < darraySize(zones); ++i) {
+      Zone *zone = darrayGet(zones, i);
+      printf("\n=== Zone %zu (%d %d %d) ===\n", i, zone->r, zone->g, zone->b);
+      for (size_t j = 0; j < darraySize(zone->segments); ++j) {
+        Segment *segm = darrayGet(zone->segments, j);
+        printf("[%zu: %d, %d]\t", segm->xg / img->x, segm->xg, segm->xd);
+      }
     }
+    printf("\n");
   }
-  printf("\n");
-
 
   deleteImage(img);
-  printf("test\n");
 }
diff --git a/src/main.c b/src/main.c
index 4f85229..c41c88b 100644
--- a/src/main.c
+++ b/src/main.c
@@ -122,7 +122,9 @@ int main(int argc, char **argv) {
     fprintf(stderr, "ERROR: no input file.");
     help(ARGERROR);
   }
-  printf("input: %s\noutput: %s\n", argresults.input, argresults.output);
+  DEBUG {
+    printf("input: %s\noutput: %s\n", argresults.input, argresults.output);
+  }
   if(argresults.compress) {
     compress(argresults.input);
   } else {
diff --git a/src/ppm.c b/src/ppm.c
index 0b20f0a..54119ba 100644
--- a/src/ppm.c
+++ b/src/ppm.c
@@ -111,7 +111,9 @@ unsigned long read_data(FILE *t_fp, Image *t_img, unsigned char **t_data,
   unsigned long size;
   /* allocation memoire */
   size = t_img->x * t_img->y * 3;
-  printf("Size image %lu %lu => %lu\n", t_img->x, t_img->y, size);
+  DEBUG {
+    printf("Size image %lu %lu => %lu\n", t_img->x, t_img->y, t_img->x * t_img->y);
+  }
   *t_data = (unsigned char *)malloc((size_t)size * sizeof(unsigned char));
   assert(*t_data);
   /* read pixel data from file */
diff --git a/src/utilities.c b/src/utilities.c
index bb49a12..7a81042 100644
--- a/src/utilities.c
+++ b/src/utilities.c
@@ -63,7 +63,9 @@ Image *newImage() {
  *  \param[in] self Conteneur d’image à détruire
  */
 void deleteImage(Image *t_self) {
-  printf("deleted all pixels\n");
+  DEBUG {
+    printf("deleted all pixels\n");
+  }
   darrayDelete(t_self->pixels);
   free(t_self);
 }