diff --git a/ext/shmop/shmop.c b/ext/shmop/shmop.c
index de2d9661435bd..aa03f54fa9c3a 100644
--- a/ext/shmop/shmop.c
+++ b/ext/shmop/shmop.c
@@ -83,6 +83,10 @@ PHP_MINIT_FUNCTION(shmop)
 {
 	shm_type = zend_register_list_destructors_ex(rsclean, NULL, "shmop", module_number);
 
+	if (!zend_hash_str_find(EG(zend_constants), "PHP_IPC_PRIVATE", sizeof("PHP_IPC_PRIVATE") - 1)) {
+		REGISTER_LONG_CONSTANT("PHP_IPC_PRIVATE", IPC_PRIVATE, CONST_PERSISTENT | CONST_CS);
+	}
+
 	return SUCCESS;
 }
 /* }}} */
diff --git a/ext/sysvsem/sysvsem.c b/ext/sysvsem/sysvsem.c
index b9f1e626a7b9f..b23717238aa31 100644
--- a/ext/sysvsem/sysvsem.c
+++ b/ext/sysvsem/sysvsem.c
@@ -175,6 +175,11 @@ PHP_MINIT_FUNCTION(sysvsem)
 	sysvsem_object_handlers.get_constructor = sysvsem_get_constructor;
 	sysvsem_object_handlers.clone_obj = NULL;
 
+
+	if (!zend_hash_str_find(EG(zend_constants), "PHP_IPC_PRIVATE", sizeof("PHP_IPC_PRIVATE") - 1)) {
+		REGISTER_LONG_CONSTANT("PHP_IPC_PRIVATE", IPC_PRIVATE, CONST_PERSISTENT | CONST_CS);
+	}
+
 	return SUCCESS;
 }
 /* }}} */
diff --git a/ext/sysvshm/sysvshm.c b/ext/sysvshm/sysvshm.c
index c63900036b86d..b430adac25ee3 100644
--- a/ext/sysvshm/sysvshm.c
+++ b/ext/sysvshm/sysvshm.c
@@ -87,6 +87,10 @@ PHP_MINIT_FUNCTION(sysvshm)
 {
 	php_sysvshm.le_shm = zend_register_list_destructors_ex(php_release_sysvshm, NULL, PHP_SHM_RSRC_NAME, module_number);
 
+	if (!zend_hash_str_find(EG(zend_constants), "PHP_IPC_PRIVATE", sizeof("PHP_IPC_PRIVATE") - 1)) {
+		REGISTER_LONG_CONSTANT("PHP_IPC_PRIVATE", IPC_PRIVATE, CONST_PERSISTENT | CONST_CS);
+	}
+
 	if (cfg_get_long("sysvshm.init_mem", &php_sysvshm.init_mem) == FAILURE) {
 		php_sysvshm.init_mem=10000;
 	}