diff --git a/tests/src/DirectTransactionTest.php b/tests/src/DirectTransactionTest.php
index 216a07b..c21d8c4 100644
--- a/tests/src/DirectTransactionTest.php
+++ b/tests/src/DirectTransactionTest.php
@@ -28,7 +28,7 @@ public function pre_http_request( $preempt, $request, $url ) {
 		return $processed_headers;
 	}
 
-	public function http_api_debug( $response, $context, $class, $args, $url ) {
+	public function http_api_debug( $response, $context, $c, $args, $url ) {
 	}
 
 	public function test_init() {
diff --git a/tests/src/GatewaysTest.php b/tests/src/GatewaysTest.php
index ebcbec3..f3ffa9a 100644
--- a/tests/src/GatewaysTest.php
+++ b/tests/src/GatewaysTest.php
@@ -26,7 +26,7 @@ public function pre_http_request( $preempt, $request, $url ) {
 		return $processed_headers;
 	}
 
-	public function http_api_debug( $response, $context, $class, $args, $url ) {
+	public function http_api_debug( $response, $context, $c, $args, $url ) {
 	}
 
 	public function test_init() {