diff --git a/src/Doctrine/DBAL/Types/CronExpressionType.php b/src/Doctrine/DBAL/Types/CronExpressionType.php
index ac15893..e385335 100644
--- a/src/Doctrine/DBAL/Types/CronExpressionType.php
+++ b/src/Doctrine/DBAL/Types/CronExpressionType.php
@@ -32,14 +32,10 @@ public function convertToPHPValue($value, AbstractPlatform $platform): ?CronExpr
         }
 
         if (!is_string($value)) {
-            if (class_exists(InvalidType::class)) {
-                throw InvalidType::new($value, CronExpression::class, ['string']);
-            }
-
             /**
              * @psalm-suppress UndefinedMethod
              */
-            throw ConversionException::conversionFailedInvalidType($value, CronExpression::class, ['string']);
+            throw class_exists(InvalidType::class) ? InvalidType::new($value, CronExpression::class, ['string']) : ConversionException::conversionFailedInvalidType($value, CronExpression::class, ['string']);
         }
 
         if ('' === $value) {
@@ -49,14 +45,10 @@ public function convertToPHPValue($value, AbstractPlatform $platform): ?CronExpr
         try {
             return CronExpression::factory($value);
         } catch (\Throwable $e) {
-            if (class_exists(ValueNotConvertible::class)) {
-                throw ValueNotConvertible::new($value, CronExpression::class, null, $e);
-            }
-
             /**
              * @psalm-suppress UndefinedMethod
              */
-            throw ConversionException::conversionFailed($value, CronExpression::class, $e);
+            throw class_exists(ValueNotConvertible::class) ? ValueNotConvertible::new($value, CronExpression::class, null, $e) : ConversionException::conversionFailed($value, CronExpression::class, $e);
         }
     }