diff --git a/helper/FFI/ClientTrait.php b/helper/FFI/ClientTrait.php
index 3a7789e3..354c0c63 100644
--- a/helper/FFI/ClientTrait.php
+++ b/helper/FFI/ClientTrait.php
@@ -25,25 +25,6 @@ trait ClientTrait
 {
     protected ClientInterface&MockObject $client;
 
-    /**
-     * @param mixed[][] $calls
-     */
-    protected function assertClientCalls(array $calls): void
-    {
-        $this->client
-            ->expects($this->exactly(count($calls)))
-            ->method('call')
-            ->willReturnCallback(function (...$args) use (&$calls) {
-                $call = array_shift($calls);
-                $return = array_pop($call);
-                foreach ($args as $key => $arg) {
-                    $this->assertThat($arg, $call[$key] instanceof Constraint ? $call[$key] : new IsIdentical($call[$key]));
-                }
-
-                return $return;
-            });
-    }
-
     protected function expectsSetInteractionKey(int $interaction, string $description, ?string $key, bool $result): void
     {
         $this->client
diff --git a/src/PhpPact/FFI/Client.php b/src/PhpPact/FFI/Client.php
index ed8660d2..6b7c6ec4 100644
--- a/src/PhpPact/FFI/Client.php
+++ b/src/PhpPact/FFI/Client.php
@@ -559,7 +559,7 @@ private function getEnum(string $name): int
         return $value;
     }
 
-    public function call(string $name, ...$arguments): mixed
+    private function call(string $name, mixed ...$arguments): mixed
     {
         return $this->ffi->{$name}(...$arguments);
     }
diff --git a/src/PhpPact/FFI/ClientInterface.php b/src/PhpPact/FFI/ClientInterface.php
index 1fb83e0e..909ce607 100644
--- a/src/PhpPact/FFI/ClientInterface.php
+++ b/src/PhpPact/FFI/ClientInterface.php
@@ -138,9 +138,4 @@ public function getPactSpecificationV3(): int;
     public function getPactSpecificationV4(): int;
 
     public function getPactSpecificationUnknown(): int;
-
-    /**
-     * @param array<int, mixed> $arguments
-     */
-    public function call(string $name, ...$arguments): mixed;
 }
diff --git a/tests/PhpPact/FFI/ClientTest.php b/tests/PhpPact/FFI/ClientTest.php
index f89aecef..62beaf72 100644
--- a/tests/PhpPact/FFI/ClientTest.php
+++ b/tests/PhpPact/FFI/ClientTest.php
@@ -394,11 +394,4 @@ public function testGetPactSpecificationUnknown(): void
     {
         $this->assertSame(0, $this->client->getPactSpecificationUnknown());
     }
-
-    #[TestWith(['abc123', true])]
-    #[TestWith(['testing', false])]
-    public function testCall(string $example, bool $result): void
-    {
-        $this->assertSame($result, $this->client->call('pactffi_check_regex', '\w{3}\d+', $example));
-    }
 }