diff --git a/src/cnn/include/cnn.h b/src/cnn/include/cnn.h
index d7dfa08..f5b4f14 100644
--- a/src/cnn/include/cnn.h
+++ b/src/cnn/include/cnn.h
@@ -34,15 +34,6 @@ void drop_neurones(float*** input, int depth, int dim1, int dim2, int dropout);
 */
 void copy_input_to_input_z(float*** output, float*** output_a, int output_depth, int output_rows, int output_columns);
 
-/*
-* Bascule les données de d_weights dans weights
-*/
-void update_weights(Network* network);
-
-/*
-* Bascule les données de d_bias dans bias
-*/
-void update_bias(Network* network);
 /*
 * Renvoie l'erreur du réseau neuronal pour une sortie (RMS)
 */
diff --git a/src/cnn/include/update.h b/src/cnn/include/update.h
index 9c16886..4b50be9 100644
--- a/src/cnn/include/update.h
+++ b/src/cnn/include/update.h
@@ -7,13 +7,13 @@
 * Met à jours les poids à partir de données obtenus après plusieurs backpropagations
 * Puis met à 0 tous les d_weights
 */
-void update_weights(Network* network);
+void update_weights(Network* network, Network* d_network);
 
 /*
 * Met à jours les biais à partir de données obtenus après plusieurs backpropagations
 * Puis met à 0 tous les d_bias
 */
-void update_bias(Network* network);
+void update_bias(Network* network, Network* d_network);
 
 /*
 * Met à 0 toutes les données de backpropagation de poids
diff --git a/src/cnn/train.c b/src/cnn/train.c
index 9a19e9a..7731875 100644
--- a/src/cnn/train.c
+++ b/src/cnn/train.c
@@ -195,10 +195,11 @@ void train(int dataset_type, char* images_file, char* labels_file, char* data_di
             accuracy += train_params->accuracy / (float) nb_images_total;
             current_accuracy = accuracy * nb_images_total/(j*BATCHES);
             
-            update_weights(network);
-            update_bias(network);
+            update_weights(network, network);
+            update_bias(network, network);
             
             printf("\rÉpoque [%d/%d]\tImage [%d/%d]\tAccuracy: "YELLOW"%0.1f%%"RESET" ", i, epochs, BATCHES*(j+1), nb_images_total, current_accuracy*100);
+            fflush(stdout);
             #endif
         }
         #ifdef USE_MULTITHREADING
diff --git a/src/cnn/update.c b/src/cnn/update.c
index a251506..ac8086d 100644
--- a/src/cnn/update.c
+++ b/src/cnn/update.c
@@ -1,13 +1,16 @@
+#include <stdio.h>
 
 #include "include/update.h"
 #include "include/struct.h"
 
-void update_weights(Network* network) {
+void update_weights(Network* network, Network* d_network) {
     int n = network->size;
     int input_depth, input_width, output_depth, output_width, k_size;
     Kernel* k_i;
+    Kernel* dk_i;
     for (int i=0; i<(n-1); i++) {
         k_i = network->kernel[i];
+        dk_i = d_network->kernel[i];
         input_depth = network->depth[i];
         input_width = network->width[i];
         output_depth = network->depth[i+1];
@@ -15,13 +18,14 @@ void update_weights(Network* network) {
 
         if (k_i->cnn) { // Convolution
             Kernel_cnn* cnn = k_i->cnn;
+            Kernel_cnn* d_cnn = dk_i->cnn;
             k_size = cnn->k_size;
             for (int a=0; a<input_depth; a++) {
                 for (int b=0; b<output_depth; b++) {
                     for (int c=0; c<k_size; c++) {
                         for (int d=0; d<k_size; d++) {
-                            cnn->w[a][b][c][d] -= network->learning_rate * cnn->d_w[a][b][c][d];
-                            cnn->d_w[a][b][c][d] = 0;
+                            cnn->w[a][b][c][d] -= network->learning_rate * d_cnn->d_w[a][b][c][d];
+                            d_cnn->d_w[a][b][c][d] = 0;
                         }
                     }
                 }
@@ -29,19 +33,21 @@ void update_weights(Network* network) {
         } else if (k_i->nn) { // Full connection
             if (input_depth==1) { // Vecteur -> Vecteur
                 Kernel_nn* nn = k_i->nn;
+                Kernel_nn* d_nn = dk_i->nn;
                 for (int a=0; a<input_width; a++) {
                     for (int b=0; b<output_width; b++) {
-                        nn->weights[a][b] -= network->learning_rate * nn->d_weights[a][b];
-                        nn->d_weights[a][b] = 0;
+                        nn->weights[a][b] -= network->learning_rate * d_nn->d_weights[a][b];
+                        d_nn->d_weights[a][b] = 0;
                     }
                 }
             } else { // Matrice -> vecteur
                 Kernel_nn* nn = k_i->nn;
+                Kernel_nn* d_nn = dk_i->nn;
                 int input_size = input_width*input_width*input_depth;
                 for (int a=0; a<input_size; a++) {
                     for (int b=0; b<output_width; b++) {
-                        nn->weights[a][b] -= network->learning_rate * nn->d_weights[a][b];
-                        nn->d_weights[a][b] = 0;
+                        nn->weights[a][b] -= network->learning_rate * d_nn->d_weights[a][b];
+                        d_nn->d_weights[a][b] = 0;
                     }
                 }
             }
@@ -51,30 +57,35 @@ void update_weights(Network* network) {
     }
 }
 
-void update_bias(Network* network) {
+void update_bias(Network* network, Network* d_network) {
+    
     int n = network->size;
     int output_width, output_depth;
     Kernel* k_i;
+    Kernel* dk_i;
     for (int i=0; i<(n-1); i++) {
         k_i = network->kernel[i];
+        dk_i = d_network->kernel[i];
         output_width = network->width[i+1];
         output_depth = network->depth[i+1];
 
         if (k_i->cnn) { // Convolution
             Kernel_cnn* cnn = k_i->cnn;
+            Kernel_cnn* d_cnn = dk_i->cnn;
             for (int a=0; a<output_depth; a++) {
                 for (int b=0; b<output_width; b++) {
                     for (int c=0; c<output_width; c++) {
-                        cnn->bias[a][b][c] -= network->learning_rate * cnn->d_bias[a][b][c];
-                        cnn->d_bias[a][b][c] = 0;
+                        cnn->bias[a][b][c] -= network->learning_rate * d_cnn->d_bias[a][b][c];
+                        d_cnn->d_bias[a][b][c] = 0;
                     }
                 }
             }
         } else if (k_i->nn) { // Full connection
             Kernel_nn* nn = k_i->nn;
+            Kernel_nn* d_nn = dk_i->nn;
             for (int a=0; a<output_width; a++) {
-                nn->bias[a] -= network->learning_rate * nn->d_bias[a];
-                nn->d_bias[a] = 0;
+                nn->bias[a] -= network->learning_rate * d_nn->d_bias[a];
+                d_nn->d_bias[a] = 0;
             }
         } else { // Pooling
             (void)0; // Ne rien faire pour la couche pooling