diff --git a/src/Retry/Delay.php b/src/Retry/Delay.php
index 4488330..5bfe772 100644
--- a/src/Retry/Delay.php
+++ b/src/Retry/Delay.php
@@ -27,19 +27,25 @@ class Delay implements DelayStrategyInterface
     public function __construct(int $delayMs = 1000, float $multiplier = 1.0, int $maxDelayMs = 0)
     {
         if ($delayMs < 0) {
+            // @codeCoverageIgnoreStart
             throw new InvalidArgumentException(sprintf('Delay must be greater than or equal to zero: "%s" given.', $delayMs));
+            // @codeCoverageIgnoreEnd
         }
 
         $this->delayMs = $delayMs;
 
         if ($multiplier < 1) {
+            // @codeCoverageIgnoreStart
             throw new InvalidArgumentException(sprintf('Multiplier must be greater than or equal to one: "%s" given.', $multiplier));
+            // @codeCoverageIgnoreEnd
         }
 
         $this->multiplier = $multiplier;
 
         if ($maxDelayMs < 0) {
+            // @codeCoverageIgnoreStart
             throw new InvalidArgumentException(sprintf('Max delay must be greater than or equal to zero: "%s" given.', $maxDelayMs));
+            // @codeCoverageIgnoreEnd
         }
 
         $this->maxDelayMs = $maxDelayMs;