diff --git a/mo/util_format.py b/mo/util_format.py
index 50e0f43457b6bb887b2935a40c68da9b3d3300f2..6ed6a48591fafb6b5f4f950e663dc06f78452286 100644
--- a/mo/util_format.py
+++ b/mo/util_format.py
@@ -98,7 +98,7 @@ def timedelta(d: datetime, ref: Optional[datetime] = None, descriptive: bool = F
 
     if len(parts) == 0:
         if before and not descriptive:
-            parts.append("méně než sekudnou")
+            parts.append("méně než sekundou")
         else:
             parts.append("méně než sekundu")
     value = " ".join(parts)