diff --git a/02-intro_rna/01-perceptron.py b/02-intro_rna/01-perceptron.py
index 782ec43..61f3bca 100644
--- a/02-intro_rna/01-perceptron.py
+++ b/02-intro_rna/01-perceptron.py
@@ -159,14 +159,14 @@ z3_pmc_xor = pmc_xor(x1_mg, x2_mg, activation=tanh)
 z4_pmc_xor = pmc_xor(x1_mg, x2_mg, activation=relu)
 
 pmc_xor_echelon_ax = fig.add_subplot(2,4,3)
-pmc_xor_echelon_ax.set_title("Xor PMC par Échelon")
+pmc_xor_echelon_ax.set_title("XOR PMC par Échelon")
 pmc_xor_echelon_ax.contourf(x1_mg, x2_mg, z1_pmc_xor)
 pmc_xor_echelon_ax.plot([0, 1], [0, 1], "rs", markersize=15)
 pmc_xor_echelon_ax.plot([0, 1], [1, 0], "g^", markersize=15)
 pmc_xor_echelon_ax.grid(True)
 
 pmc_xor_sigmoid_ax = fig.add_subplot(2,4,4)
-pmc_xor_sigmoid_ax.set_title("Xor PMC par Sigmoïde")
+pmc_xor_sigmoid_ax.set_title("XOR PMC par Sigmoïde")
 pmc_xor_sigmoid_ax.contourf(x1_mg, x2_mg, z2_pmc_xor)
 pmc_xor_sigmoid_ax.plot([0, 1], [0, 1], "rs", markersize=15)
 pmc_xor_sigmoid_ax.plot([0, 1], [1, 0], "g^", markersize=15)
@@ -177,14 +177,14 @@ pmc_xor_tanh_ax.contourf(x1_mg, x2_mg, z3_pmc_xor)
 pmc_xor_tanh_ax.plot([0, 1], [0, 1], "rs", markersize=15)
 pmc_xor_tanh_ax.plot([0, 1], [1, 0], "g^", markersize=15)
 pmc_xor_tanh_ax.grid(True)
-pmc_xor_tanh_ax.set_xlabel("Xor PMC par Tanh", fontsize=12)
+pmc_xor_tanh_ax.set_xlabel("XOR PMC par Tanh", fontsize=12)
 
 pmc_xor_relu_ax = fig.add_subplot(2,4,8)
 pmc_xor_relu_ax.contourf(x1_mg, x2_mg, z4_pmc_xor)
 pmc_xor_relu_ax.plot([0, 1], [0, 1], "rs", markersize=15)
 pmc_xor_relu_ax.plot([0, 1], [1, 0], "g^", markersize=15)
 pmc_xor_relu_ax.grid(True)
-pmc_xor_relu_ax.set_xlabel("Xor PMC par ReLU", fontsize=12)
+pmc_xor_relu_ax.set_xlabel("XOR PMC par ReLU", fontsize=12)
 
 plt.show()
 
diff --git a/02-intro_rna/img/01-perceptron.png b/02-intro_rna/img/01-perceptron.png
index c94707f..b66342c 100644
Binary files a/02-intro_rna/img/01-perceptron.png and b/02-intro_rna/img/01-perceptron.png differ