diff --git a/topics/reference_guide/custom_language_support/code_completion.md b/topics/reference_guide/custom_language_support/code_completion.md
index 7de1bf9c3..a06861f72 100644
--- a/topics/reference_guide/custom_language_support/code_completion.md
+++ b/topics/reference_guide/custom_language_support/code_completion.md
@@ -56,4 +56,4 @@ For every lookup element, you can specify the following attributes:
 
 ### How to show a completion popup programmatically
 
-Use `com.intellij.codeInsight.AutoPopupController.scheduleAutoPopup()`.
+Use [`AutoPopupController.scheduleAutoPopup()`](upsource:///platform/analysis-impl/src/com/intellij/codeInsight/AutoPopupController.java).