diff --git a/mapytex/calculus/core/MO/mo.py b/mapytex/calculus/core/MO/mo.py
index 91ef514..c2b2837 100644
--- a/mapytex/calculus/core/MO/mo.py
+++ b/mapytex/calculus/core/MO/mo.py
@@ -143,7 +143,7 @@ class MOnumber(MO):
 
     @property
     def __txt__(self):
-        if self.value > 0:
+        if self.value >= 0:
             return str(self.value)
 
         return f"- {abs(self.value)}"