diff --git a/00.brainstorming-pedagogical-teams/45.synthesis-structuring/instructions-for-levels/10.main/textbook.es.md b/00.brainstorming-pedagogical-teams/45.synthesis-structuring/instructions-for-levels/10.main/textbook.es.md
index 4a643b5ad..36cb4d943 100644
--- a/00.brainstorming-pedagogical-teams/45.synthesis-structuring/instructions-for-levels/10.main/textbook.es.md
+++ b/00.brainstorming-pedagogical-teams/45.synthesis-structuring/instructions-for-levels/10.main/textbook.es.md
@@ -8,4 +8,4 @@ lessons:
      order: 1
 ---
 
-#### Lluvia de ideas para la parte "principal"
\ No newline at end of file
+#### Lluvia de ideas para la parte "Principal"
\ No newline at end of file