diff --git a/src/main/scala/lc/core/captchaFields.scala b/src/main/scala/lc/core/captchaFields.scala
index 42d977e..192ffa9 100644
--- a/src/main/scala/lc/core/captchaFields.scala
+++ b/src/main/scala/lc/core/captchaFields.scala
@@ -26,7 +26,7 @@ object AttributesEnum extends Enumeration {
   val PLAYGROUND_ENABLED: Value = Value("playgroundEnabled")
   val CORS_HEADER: Value = Value("corsHeader")
   val CONFIG: Value = Value("config")
-  val MAX_ATTEMPTS: Value = Value("maxAttempts")
+  val MAX_ATTEMPTS_RATIO: Value = Value("maxAttemptsRatio")
 }
 
 object ResultEnum extends Enumeration {
diff --git a/src/main/scala/lc/core/config.scala b/src/main/scala/lc/core/config.scala
index 970a5ec..d2349fa 100644
--- a/src/main/scala/lc/core/config.scala
+++ b/src/main/scala/lc/core/config.scala
@@ -51,7 +51,7 @@ class Config(configFilePath: String) {
   val threadDelay: Int = configFields.threadDelayInt.getOrElse(2)
   val playgroundEnabled: Boolean = configFields.playgroundEnabledBool.getOrElse(true)
   val corsHeader: String = configFields.corsHeader.getOrElse("")
-  val maxAttempts: Int = configFields.maxAttemptsInt.getOrElse(10)
+  val maxAttempts: Int = Math.max(1, (configFields.maxAttemptsRatioFloat.getOrElse(0.01f) * bufferCount).toInt)
 
   private val captchaConfigJson = (configJson \ "captchas")
   val captchaConfigTransform: JValue = captchaConfigJson transformField { case JField("config", JObject(config)) =>
@@ -74,7 +74,7 @@ class Config(configFilePath: String) {
         (AttributesEnum.THREAD_DELAY.toString -> 2) ~
         (AttributesEnum.PLAYGROUND_ENABLED.toString -> true) ~
         (AttributesEnum.CORS_HEADER.toString -> "") ~
-        (AttributesEnum.MAX_ATTEMPTS.toString -> 10) ~
+        (AttributesEnum.MAX_ATTEMPTS_RATIO.toString -> 0.01f) ~
         ("captchas" -> List(
           (
             (AttributesEnum.NAME.toString -> "FilterChallenge") ~
diff --git a/src/main/scala/lc/core/models.scala b/src/main/scala/lc/core/models.scala
index 3a9ed3c..9dfb16c 100644
--- a/src/main/scala/lc/core/models.scala
+++ b/src/main/scala/lc/core/models.scala
@@ -28,17 +28,20 @@ case class ConfigField(
     threadDelay: Option[Integer],
     playgroundEnabled: Option[java.lang.Boolean],
     corsHeader: Option[String],
-    maxAttempts: Option[Integer]
+    maxAttemptsRatio: Option[java.lang.Float]
 ) {
   lazy val portInt: Option[Int] = mapInt(port)
   lazy val bufferCountInt: Option[Int] = mapInt(bufferCount)
   lazy val seedInt: Option[Int] = mapInt(seed)
   lazy val captchaExpiryTimeLimitInt: Option[Int] = mapInt(captchaExpiryTimeLimit)
   lazy val threadDelayInt: Option[Int] = mapInt(threadDelay)
-  lazy val maxAttemptsInt: Option[Int] = mapInt(maxAttempts)
+  lazy val maxAttemptsRatioFloat: Option[Float] = mapFloat(maxAttemptsRatio)
   lazy val playgroundEnabledBool: Option[Boolean] = playgroundEnabled.map(_ || true)
 
   private def mapInt(x: Option[Integer]): Option[Int] = {
     x.map(_ + 0)
   }
+  private def mapFloat(x: Option[java.lang.Float]): Option[Float] = {
+    x.map(_ + 0.0f)
+  }
 }