diff --git a/ext/opcache/ZendAccelerator.c b/ext/opcache/ZendAccelerator.c
index 84acae980ce..904a9c2ae08 100644
--- a/ext/opcache/ZendAccelerator.c
+++ b/ext/opcache/ZendAccelerator.c
@@ -89,7 +89,6 @@ typedef int gid_t;
 #ifndef ZEND_WIN32
 # include <sys/types.h>
 # include <sys/wait.h>
-# include <sys/ipc.h>
 # include <pwd.h>
 # include <grp.h>
 #endif