diff --git a/rocketpy/motors/tank_geometry.py b/rocketpy/motors/tank_geometry.py
index dc411990e..067826835 100644
--- a/rocketpy/motors/tank_geometry.py
+++ b/rocketpy/motors/tank_geometry.py
@@ -394,7 +394,8 @@ def add_spherical_caps(self):
         # raise warning
         print(
             "Warning: Adding spherical caps to the tank will not modify the "
-            + "height of the tank."
+            + f"total height of the tank {self.height}."
+            + f"Its cylindrical portion height will be reduced to {self.height - 2*self.radius}."
         )
 
         if not self.has_caps: