diff --git a/src/part3D/graph.c b/src/part3D/graph.c
index dfffda0..ec77231 100644
--- a/src/part3D/graph.c
+++ b/src/part3D/graph.c
@@ -39,17 +39,17 @@ void fast_copy_dwords(void *dest, void *src, int count);
     parm [edi] [esi] [ecx] modify [edi esi ecx];
 
 void clear_buffers(uint8_t color) {
-	//memset(backbuffer, color, SCREEN_PIXELS);
+	// memset(backbuffer, color, SCREEN_PIXELS);
 	uint32_t c32 = color | (color << 8) | (color << 16) | (color << 24);
-	fast_clear_dwords(backbuffer, c32, SCREEN_PIXELS / 4);
+	fast_clear_dwords(backbuffer, c32, SCREEN_PIXELS >> 2);
 
 	//memset(zbuffer, 0xFF, SCREEN_PIXELS * sizeof(uint16_t));
-	fast_clear_dwords(zbuffer, 0xFFFFFFFFUL, SCREEN_PIXELS / 2); /* 2 pixels (16 bits) par itération 32 bits */
+	fast_clear_dwords(zbuffer, 0xFFFFFFFFUL, SCREEN_PIXELS >> 1); /* 2 pixels (16 bits) par itération 32 bits */
 }
 
 void clear_zbuffer(void) {
 	//memset(zbuffer, 0xFF, SCREEN_PIXELS * sizeof(uint16_t));
-	fast_clear_dwords(zbuffer, 0xFFFFFFFFUL, SCREEN_PIXELS / 2);
+	fast_clear_dwords(zbuffer, 0xFFFFFFFFUL, SCREEN_PIXELS >> 1);
 }
 
 void blit_image(Image *img, int x, int y) {