diff --git a/preferences/templatetags/design.py b/preferences/templatetags/design.py
index 5e18572f..87a0e0f8 100644
--- a/preferences/templatetags/design.py
+++ b/preferences/templatetags/design.py
@@ -28,14 +28,12 @@ register = template.Library()
 @register.filter(needs_autoescape=False)
 def tick(valeur, autoescape=False):
 
-    if autoescape:
-        esc = conditional_escape
-    else:
-        esc = lambda x: x
+    if isinstance(valeur,bool):
+        if valeur == True:
+            result = '<i style="color: #1ECA18;" class="fas fa-check"></i>'
+        else:
+            result = '<i style="color: #D10115;" class="fas fa-times"></i>'
+        return mark_safe(result)
 
-    if valeur == True:
-        result = '<i style="color: #1ECA18;" class="fas fa-check"></i>'
-    else:
-        result = '<i style="color: #D10115;" class="fas fa-times"></i>'
-    
-    return mark_safe(result)
+    else: #  if the value is not a boolean, display it as if tick was not called 
+        return valeur