diff --git a/23_advanced_generics/src/iterator.rs b/23_advanced_generics/src/iterator.rs
index cb12e1a2baa0d16b4eaa12bf2ea4111d9675677f..a0cd6fee954f8c54c15043e671931e77796279b7 100644
--- a/23_advanced_generics/src/iterator.rs
+++ b/23_advanced_generics/src/iterator.rs
@@ -32,7 +32,7 @@ impl Iterator for Equation<Quadratic> {
 
     fn next(&mut self) -> Option<Self::Item> {
         self.current += 1;
-        if self.current == u32::MAX {
+        if self.current >= u16::MAX as u32 {
             return None;
         }