diff --git a/app/scodoc/sco_excel.py b/app/scodoc/sco_excel.py
index c9551b692..b5f9879ed 100644
--- a/app/scodoc/sco_excel.py
+++ b/app/scodoc/sco_excel.py
@@ -224,6 +224,8 @@ class ScoExcelSheet:
         style -- style par défaut (dictionnaire cf. excel_make_style) de la feuille si non spécifié
         """
         cell = WriteOnlyCell(self.ws, value or "")
+        if not (isinstance(value, int) or isinstance(value, float)):
+            cell.data_type = "s"
         # if style is not None and "fill" in style:
         #     toto()
         if style is None: