diff --git a/ext/opcache/zend_shared_alloc.h b/ext/opcache/zend_shared_alloc.h
index de5012b2204ad..1caf678e36fe4 100644
--- a/ext/opcache/zend_shared_alloc.h
+++ b/ext/opcache/zend_shared_alloc.h
@@ -131,7 +131,6 @@ int zend_shared_alloc_startup(size_t requested_size, size_t reserved_size);
 void zend_shared_alloc_shutdown(void);
 
 /* allocate shared memory block */
-void *zend_shared_alloc_pages(size_t requested_size);
 void *zend_shared_alloc(size_t size);
 
 /**