diff --git a/00.brainstorming-pedagogical-teams/40.collection-existing-pedagogical-content/05.classical-mechanics/vector-analysis/textbook.fr.md b/00.brainstorming-pedagogical-teams/40.collection-existing-pedagogical-content/05.classical-mechanics/vector-analysis/textbook.fr.md
index d70abbf35..48617b8b2 100644
--- a/00.brainstorming-pedagogical-teams/40.collection-existing-pedagogical-content/05.classical-mechanics/vector-analysis/textbook.fr.md
+++ b/00.brainstorming-pedagogical-teams/40.collection-existing-pedagogical-content/05.classical-mechanics/vector-analysis/textbook.fr.md
@@ -305,7 +305,7 @@ $`\quad\Longleftrightarrow\quad cos(\widehat{\overrightarrow{U},\overrightarrow{
 "$`\overrightarrow{U}`$ et $`\overrightarrow{V}`$ sont colinéaires"
 $`\quad\Longrightarrow\quad ...`$
 
-"$`\overrightarrow{U}`$ et $`\overrightarrow{V}`$ sont colinéaires"`$
+"$`\overrightarrow{U}`$ et $`\overrightarrow{V}`$ sont colinéaires`$"
 $`\Longrightarrow\left|\overrightarrow{U}\cdot\overrightarrow{V}=+||\overrightarrow{U}||\cdot||\overrightarrow{V}||\,si\,\widehat{\overrightarrow{U},\overrightarrow{V}}=0\\ 
 \overrightarrow{U}\cdot\overrightarrow{V}=-||\overrightarrow{U}||\cdot||\overrightarrow{V}||\,si\, \widehat{\overrightarrow{U},\overrightarrow{V}}=\pi`$