diff --git a/ext/sockets/sockets.c b/ext/sockets/sockets.c
index 7be7554d4123..7b9b903585b8 100644
--- a/ext/sockets/sockets.c
+++ b/ext/sockets/sockets.c
@@ -1646,6 +1646,7 @@ PHP_FUNCTION(socket_recvfrom)
 			*/
 #endif
 		default:
+			zend_string_efree(recv_buf);
 			zend_argument_value_error(1, "must be one of AF_UNIX, AF_INET, or AF_INET6");
 			RETURN_THROWS();
 	}