diff --git a/src/Request/Executor.php b/src/Request/Executor.php
index 69d6bc7e4..b4464a5e6 100644
--- a/src/Request/Executor.php
+++ b/src/Request/Executor.php
@@ -76,7 +76,7 @@ public function addSchema(string $name, Schema $schema): self
     public function getSchema(?string $name = null): Schema
     {
         if (empty($this->schemas)) {
-            throw new RuntimeException('At least one schema should be declare.');
+            throw new RuntimeException('At least one schema should be declared.');
         }
 
         if (null === $name) {
diff --git a/tests/Request/ExecutorTest.php b/tests/Request/ExecutorTest.php
index 4918b130a..b1953d03d 100644
--- a/tests/Request/ExecutorTest.php
+++ b/tests/Request/ExecutorTest.php
@@ -26,7 +26,7 @@ protected function getMockedExecutor(): RequestExecutor
     public function testGetSchemaNoSchemaFound(): void
     {
         $this->expectException(RuntimeException::class);
-        $this->expectExceptionMessage('At least one schema should be declare.');
+        $this->expectExceptionMessage('At least one schema should be declared.');
 
         $this->getMockedExecutor()->getSchema('fake');
     }