diff --git a/app/src/main/res/values-es/strings.xml b/app/src/main/res/values-es/strings.xml
index d1d12c772..3b68d684a 100644
--- a/app/src/main/res/values-es/strings.xml
+++ b/app/src/main/res/values-es/strings.xml
@@ -238,7 +238,7 @@
 
     <string name="monday_letter">L</string>
     <string name="tuesday_letter">M</string>
-    <string name="wednesday_letter">X</string>
+    <string name="wednesday_letter">M</string>
     <string name="thursday_letter">J</string>
     <string name="friday_letter">V</string>
     <string name="saturday_letter">S</string>