diff --git a/Zend/zend_hash.h b/Zend/zend_hash.h
index 5306fe34c79b4..9fb423b13206e 100644
--- a/Zend/zend_hash.h
+++ b/Zend/zend_hash.h
@@ -899,6 +899,8 @@ static zend_always_inline void *zend_hash_str_find_ptr(const HashTable *ht, cons
 	}
 }
 
+BEGIN_EXTERN_C()
+
 /* Will lowercase the str; use only if you don't need the lowercased string for
  * anything else. If you have a lowered string, use zend_hash_str_find_ptr. */
 ZEND_API void *zend_hash_str_find_ptr_lc(const HashTable *ht, const char *str, size_t len);
@@ -907,6 +909,8 @@ ZEND_API void *zend_hash_str_find_ptr_lc(const HashTable *ht, const char *str, s
  * anything else. If you have a lowered string, use zend_hash_find_ptr. */
 ZEND_API void *zend_hash_find_ptr_lc(const HashTable *ht, zend_string *key);
 
+END_EXTERN_C()
+
 static zend_always_inline void *zend_hash_index_find_ptr(const HashTable *ht, zend_ulong h)
 {
 	zval *zv;