diff --git a/10.brainstorming-innovative-courses/intercambio-curso-electromagnetismo/textbook.en.md b/10.brainstorming-innovative-courses/intercambio-curso-electromagnetismo/textbook.en.md
index 8c4c2edd6..57840afe5 100644
--- a/10.brainstorming-innovative-courses/intercambio-curso-electromagnetismo/textbook.en.md
+++ b/10.brainstorming-innovative-courses/intercambio-curso-electromagnetismo/textbook.en.md
@@ -634,7 +634,7 @@ $`\overrightarrow{rot}\overrightarrow{B}=\mu_0 \cdot \overrightarrow{j}`$
 
 Electromagnétisme dans le vide :
 
-$`\overrightarrow{rot}\,\overrightarrow{B}=\mu_0 \cdot \overrightarrow{j}\,+ \, \epsilon_0\mu_0 \cdot \dfrac{\partial \overrightarrow{E}{\partial t}`$$`=\mu_0 \cdot \overrightarrow{j}\,+ \, \dfrac{1}{c^2} \cdot \dfrac{\partial \overrightarrow{E}{\partial t}`$$`=\mu_0 \cdot \overrightarrow{j}\,+ \mu_0 \cdot \overrightarrow{j_D} = \mu_0 \cdot (overrightarrow{j}+overrightarrow{j_D})`$
+$`\overrightarrow{rot}\,\overrightarrow{B}=\mu_0 \cdot \overrightarrow{j}\,+ \, \epsilon_0\mu_0 \cdot \dfrac{\partial \overrightarrow{E}{\partial t}`$$`=\mu_0 \cdot \overrightarrow{j}\,+ \, \dfrac{1}{c^2} \cdot \dfrac{\partial \overrightarrow{E}{\partial t}`$$`=\mu_0 \cdot \overrightarrow{j}\,+ \mu_0 \cdot \overrightarrow{j_D} = \mu_0 \cdot (\overrightarrow{j}+\overrightarrow{j_D})`$
 
 avec $`\overrightarrow{j_D}`$ courant de déplacement :  $`\overrightarrow{j_D}=\epsilon_0 \cdot \dfrac{\partial \overrightarrow{E}}{\partial t}`$