diff --git a/ext/random/php_random.h b/ext/random/php_random.h
index b51948658e5..a29095fd2e3 100644
--- a/ext/random/php_random.h
+++ b/ext/random/php_random.h
@@ -31,6 +31,7 @@
 #ifndef PHP_RANDOM_H
 # define PHP_RANDOM_H
 
+# include "php.h"
 # include "zend_result.h"
 
 PHPAPI double php_combined_lcg(void);