diff --git a/topics/reference_guide/custom_language_support/language_injection.md b/topics/reference_guide/custom_language_support/language_injection.md
index e067b4116..4594a83e8 100644
--- a/topics/reference_guide/custom_language_support/language_injection.md
+++ b/topics/reference_guide/custom_language_support/language_injection.md
@@ -201,6 +201,10 @@ If there is no primary `LanguageInjectionPerformer` found, then a fallback injec
 
 The method `performInjection()` does the actual injection into the context PSI element and/or some elements around it if needed in case if they are semantically connected (concatenation injection for instance).
 
+> To use Language Injection API in your project, [add dependency](plugin_dependencies.md#2-project-setup) on the `IntelliLang` plugin.
+>
+{type="note"}
+
 ## MultiHostInjector
 
 [`MultiHostInjector`](upsource:///platform/core-api/src/com/intellij/lang/injection/MultiHostInjector.java) registered in `com.intellij.multiHostInjector` EP is a very low-level API, but it gives plugin authors the most freedom.