diff --git a/ext/fileinfo/fileinfo.c b/ext/fileinfo/fileinfo.c
index a6f3e64db6..c3047233db 100644
--- a/ext/fileinfo/fileinfo.c
+++ b/ext/fileinfo/fileinfo.c
@@ -14,6 +14,9 @@
   +----------------------------------------------------------------------+
 */

+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
 #include "php.h"

 #include "libmagic/magic.h"