diff --git a/src/tests.rs b/src/tests.rs
index 0c2acbe8..235561df 100644
--- a/src/tests.rs
+++ b/src/tests.rs
@@ -1261,6 +1261,9 @@ fn roundtrip_percentage_token() {
     // Test simple number serialization
     for i in 0..101 {
         test_roundtrip(&format!("{}%", i));
+        if i == 100 {
+            break;
+        }
         for j in 0..10 {
             if j != 0 {
                 test_roundtrip(&format!("{}.{}%", i, j));