diff --git a/src/include/pg_config_manual.h b/src/include/pg_config_manual.h
index 9e25ce0..265dae0 100644
--- a/src/include/pg_config_manual.h
+++ b/src/include/pg_config_manual.h
@@ -321,7 +321,6 @@
  */
 /* #define HEAPDEBUGALL */
 /* #define ACLDEBUG */
-/* #define RTDEBUG */
 
 /*
  * Automatic configuration file name for ALTER SYSTEM.