diff --git a/program_methods/guest/src/bin/token.rs b/program_methods/guest/src/bin/token.rs
index aac0363..f561b82 100644
--- a/program_methods/guest/src/bin/token.rs
+++ b/program_methods/guest/src/bin/token.rs
@@ -1367,7 +1367,7 @@ mod tests {
         }
 
         fn mint_overflow() -> u128 {
-            2_u128.pow(128) - 40_000
+            u128::MAX - 40_000
         }
 
         fn init_supply_mint() -> u128 {