diff --git a/src/main.cpp b/src/main.cpp
index fedbc51..87b88a2 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -341,12 +341,14 @@ void scribe_sd (){
   char timestamp[] = "YY-MM-DD-hh:mm:ss";
   char *horodatage = now.toString(timestamp);
   char buffer[64];
-  snprintf(buffer, sizeof buffer, "%d", vRotReel);
+  int chrono_scribe = millis() - start_chrono_scribe;
+  int vRotMoyen = count*60000/(pptr*chrono_scribe);
+  snprintf(buffer, sizeof buffer, "%d", vRotMoyen);
   appendFile(SD, fichier, horodatage);
   appendFile(SD, fichier, " "  );
   appendFile(SD, fichier, buffer);
   appendFile(SD, fichier, "\n"  );
-  //Serial.println(vRotReel);
+  Serial.println("ECRITURE SUR SD");
   sem_scribe = false;
   }
 }