Added njs_value_null_set().
diff --git a/src/njs.h b/src/njs.h
index d4e3a4b..1e4963f 100644
--- a/src/njs.h
+++ b/src/njs.h
@@ -375,6 +375,7 @@
 NJS_EXPORT void njs_vm_memory_error(njs_vm_t *vm);
 
 NJS_EXPORT void njs_value_undefined_set(njs_value_t *value);
+NJS_EXPORT void njs_value_null_set(njs_value_t *value);
 NJS_EXPORT void njs_value_boolean_set(njs_value_t *value, int yn);
 NJS_EXPORT void njs_value_number_set(njs_value_t *value, double num);
 
diff --git a/src/njs_value.c b/src/njs_value.c
index d72116a..0008ffd 100644
--- a/src/njs_value.c
+++ b/src/njs_value.c
@@ -386,6 +386,13 @@
 
 
 void
+njs_value_null_set(njs_value_t *value)
+{
+    njs_set_null(value);
+}
+
+
+void
 njs_value_boolean_set(njs_value_t *value, int yn)
 {
     njs_set_boolean(value, yn);