diff --git a/jerry-core/api/jerry.c b/jerry-core/api/jerry.c
index 0664e8661..714e8ccec 100644
--- a/jerry-core/api/jerry.c
+++ b/jerry-core/api/jerry.c
@@ -3309,7 +3309,7 @@ jerry_value_is_dataview (const jerry_value_t value) /**< value to check if it is
  *         TypeError if the object is not a DataView.
  */
 jerry_value_t
-jerry_get_dataview_buffer (jerry_value_t value, /**< DataView to get the arraybuffer from */
+jerry_get_dataview_buffer (const jerry_value_t value, /**< DataView to get the arraybuffer from */
                            jerry_length_t *byte_offset, /**< [out] byteOffset property */
                            jerry_length_t *byte_length) /**< [out] byteLength property */
 {
diff --git a/jerry-core/ecma/base/ecma-module.h b/jerry-core/ecma/base/ecma-module.h
index 951174771..923282ee1 100644
--- a/jerry-core/ecma/base/ecma-module.h
+++ b/jerry-core/ecma/base/ecma-module.h
@@ -116,18 +116,18 @@ typedef struct ecma_module_resolve_stack
 } ecma_module_resolve_stack_t;
 
 bool ecma_module_resolve_set_insert (ecma_module_resolve_set_t **set_p,
-                                     ecma_module_t *module_p,
-                                     ecma_string_t *export_name_p);
+                                     ecma_module_t * const module_p,
+                                     ecma_string_t * const export_name_p);
 void ecma_module_resolve_set_cleanup (ecma_module_resolve_set_t *set_p);
 
 void ecma_module_resolve_stack_push (ecma_module_resolve_stack_t **stack_p,
-                                     ecma_module_t *module_p,
-                                     ecma_string_t *export_name_p);
+                                     ecma_module_t * const module_p,
+                                     ecma_string_t * const export_name_p);
 void ecma_module_resolve_stack_pop (ecma_module_resolve_stack_t **stack_p);
 
 ecma_string_t *ecma_module_create_normalized_path (const uint8_t *char_p,
                                                    prop_length_t size);
-ecma_module_t *ecma_module_find_or_create_module (ecma_string_t *path_p);
+ecma_module_t *ecma_module_find_or_create_module (ecma_string_t * const path_p);
 
 ecma_value_t ecma_module_connect_imports (void);
 ecma_value_t ecma_module_parse_modules (void);