diff --git a/ext/php_driver.h b/ext/php_driver.h
index 10680d221..bc42b6fcf 100644
--- a/ext/php_driver.h
+++ b/ext/php_driver.h
@@ -46,12 +46,8 @@ typedef int pid_t;
 #  error PHP 5.6.0 or later is required in order to build the driver
 #endif
 
-#if HAVE_SPL
-#  include <ext/spl/spl_iterators.h>
-#  include <ext/spl/spl_exceptions.h>
-#else
-#  error SPL must be enabled in order to build the driver
-#endif
+#include <ext/spl/spl_iterators.h>
+#include <ext/spl/spl_exceptions.h>
 
 #include "version.h"