diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3840f25..e9369af 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,10 @@
 
 ## NOT RELEASED
 
+### Changed
+
+- Enable compiler optimization for the `sprintf` function.
+
 ## 1.1.3
 
 ### Changed
diff --git a/src/Input/DetectDominantLanguageRequest.php b/src/Input/DetectDominantLanguageRequest.php
index ec1fc80..06720ac 100644
--- a/src/Input/DetectDominantLanguageRequest.php
+++ b/src/Input/DetectDominantLanguageRequest.php
@@ -83,7 +83,7 @@ private function requestBody(): array
     {
         $payload = [];
         if (null === $v = $this->text) {
-            throw new InvalidArgument(sprintf('Missing parameter "Text" for "%s". The value cannot be null.', __CLASS__));
+            throw new InvalidArgument(\sprintf('Missing parameter "Text" for "%s". The value cannot be null.', __CLASS__));
         }
         $payload['Text'] = $v;