diff --git a/docs/02.API-REFERENCE.md b/docs/02.API-REFERENCE.md
index 680823906..1722d4b96 100644
--- a/docs/02.API-REFERENCE.md
+++ b/docs/02.API-REFERENCE.md
@@ -35,6 +35,7 @@ Possible compile time enabled feature types:
  - JERRY_FEATURE_REGEXP_DUMP - regexp byte-code dumps
  - JERRY_FEATURE_SNAPSHOT_SAVE - saving snapshot files
  - JERRY_FEATURE_SNAPSHOT_EXEC - executing snapshot files
+ - JERRY_FEATURE_DEBUGGER - debugging
 
 ## jerry_char_t