diff --git a/main.js b/main.js
index 2929dd5..4dbf947 100644
--- a/main.js
+++ b/main.js
@@ -9,7 +9,7 @@ function evaluate() {
 
 	const m = BigInt(modulus.value);
 	if (m === 0n) {
-		const e = Error("modulus cannot be 0")
+		const e = Error("invalid modulus")
 		result.value = e;
 		console.log(e);
 		return;