diff --git a/CHANGELOG.md b/CHANGELOG.md
index eb38181..1cef151 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,7 +2,7 @@
 
 ## 3.3.1 under development
 
-- no changes in this release.
+- Enh #101: Minor performance improvement by remove unnecessary code in `DefinitionStorage` (@vjik)
 
 ## 3.3.0 March 16, 2024
 
diff --git a/src/DefinitionStorage.php b/src/DefinitionStorage.php
index c9e0459..202cba8 100644
--- a/src/DefinitionStorage.php
+++ b/src/DefinitionStorage.php
@@ -135,7 +135,8 @@ private function isResolvable(string $id, array $building): bool
                 $parameter = $dependency->getReflection();
                 $type = $parameter->getType();
 
-                if ($parameter->isVariadic() || $parameter->isOptional()) {
+                // This condition covers variadic parameters, because variadic parameter is optional
+                if ($parameter->isOptional()) {
                     /** @infection-ignore-all Mutation don't change behaviour, but degrade performance. */
                     break;
                 }