diff --git a/ext/spl/spl_array.c b/ext/spl/spl_array.c
index 6a31a02da0b9c..4f5e680a0a617 100644
--- a/ext/spl/spl_array.c
+++ b/ext/spl/spl_array.c
@@ -34,12 +34,12 @@
 #include "spl_exceptions.h"
 
 /* Defined later in the file */
-zend_object_handlers spl_handler_ArrayIterator;
+static zend_object_handlers spl_handler_ArrayIterator;
 PHPAPI zend_class_entry  *spl_ce_ArrayIterator;
 PHPAPI zend_class_entry  *spl_ce_RecursiveArrayIterator;
 
 /* ArrayObject class */
-zend_object_handlers spl_handler_ArrayObject;
+static zend_object_handlers spl_handler_ArrayObject;
 PHPAPI zend_class_entry  *spl_ce_ArrayObject;
 
 typedef struct _spl_array_object {
diff --git a/ext/spl/spl_dllist.c b/ext/spl/spl_dllist.c
index d9c546f154a77..d45df4b4da443 100644
--- a/ext/spl/spl_dllist.c
+++ b/ext/spl/spl_dllist.c
@@ -33,7 +33,7 @@
 #include "spl_dllist_arginfo.h"
 #include "spl_exceptions.h"
 
-zend_object_handlers spl_handler_SplDoublyLinkedList;
+static zend_object_handlers spl_handler_SplDoublyLinkedList;
 PHPAPI zend_class_entry  *spl_ce_SplDoublyLinkedList;
 PHPAPI zend_class_entry  *spl_ce_SplQueue;
 PHPAPI zend_class_entry  *spl_ce_SplStack;
diff --git a/ext/spl/spl_fixedarray.c b/ext/spl/spl_fixedarray.c
index 154b38e520112..1d0381380898d 100644
--- a/ext/spl/spl_fixedarray.c
+++ b/ext/spl/spl_fixedarray.c
@@ -33,7 +33,7 @@
 #include "spl_iterators.h"
 #include "ext/json/php_json.h"
 
-zend_object_handlers spl_handler_SplFixedArray;
+static zend_object_handlers spl_handler_SplFixedArray;
 PHPAPI zend_class_entry *spl_ce_SplFixedArray;
 
 #ifdef COMPILE_DL_SPL_FIXEDARRAY
diff --git a/ext/spl/spl_heap.c b/ext/spl/spl_heap.c
index 83bca9e72384b..2c7f4eda77390 100644
--- a/ext/spl/spl_heap.c
+++ b/ext/spl/spl_heap.c
@@ -33,8 +33,8 @@
 
 #define SPL_HEAP_CORRUPTED       0x00000001
 
-zend_object_handlers spl_handler_SplHeap;
-zend_object_handlers spl_handler_SplPriorityQueue;
+static zend_object_handlers spl_handler_SplHeap;
+static zend_object_handlers spl_handler_SplPriorityQueue;
 
 PHPAPI zend_class_entry  *spl_ce_SplHeap;
 PHPAPI zend_class_entry  *spl_ce_SplMaxHeap;
diff --git a/ext/spl/spl_observer.c b/ext/spl/spl_observer.c
index b996764c1aca1..0d72df557cf7c 100644
--- a/ext/spl/spl_observer.c
+++ b/ext/spl/spl_observer.c
@@ -42,7 +42,7 @@ PHPAPI zend_class_entry     *spl_ce_SplSubject;
 PHPAPI zend_class_entry     *spl_ce_SplObjectStorage;
 PHPAPI zend_class_entry     *spl_ce_MultipleIterator;
 
-PHPAPI zend_object_handlers spl_handler_SplObjectStorage;
+static zend_object_handlers spl_handler_SplObjectStorage;
 
 /* Bit flags for marking internal functionality overridden by SplObjectStorage subclasses. */
 #define SOS_OVERRIDDEN_READ_DIMENSION  1