diff --git a/src/layout/constraint.rs b/src/layout/constraint.rs
index 63a42ee6..972a992c 100644
--- a/src/layout/constraint.rs
+++ b/src/layout/constraint.rs
@@ -116,8 +116,12 @@ pub enum Constraint {
 
     /// Applies a percentage of the available space to the element
     ///
-    /// Converts the given percentage to a floating-point value and multiplies that with area.
-    /// This value is rounded back to a integer as part of the layout split calculation.
+    /// Converts the given percentage to a floating-point value and multiplies that with area. This
+    /// value is rounded back to a integer as part of the layout split calculation.
+    ///
+    /// **Note**: As this value only accepts a `u16`, certain percentages that cannot be
+    /// represented exactly (e.g. 1/3) are not possible. You might want to use
+    /// [`Constraint::Ratio`] or [`Constraint::Fill`] in such cases.
     ///
     /// # Examples
     ///