diff --git a/src/backend/distributed/shared_library_init.c b/src/backend/distributed/shared_library_init.c
index 58da8e6ba..2606fc325 100644
--- a/src/backend/distributed/shared_library_init.c
+++ b/src/backend/distributed/shared_library_init.c
@@ -1821,15 +1821,15 @@ RegisterCitusConfigVariables(void)
 		GUC_NO_SHOW_ALL | GUC_NOT_IN_SAMPLE | GUC_UNIT_MS,
 		NULL, NULL, NULL);
 
-      DefineCustomStringVariable(
-                "citus.main_db",
-                gettext_noop("Which database is designated as the controldb"),
-                NULL,
-                &MainDb,
-                "",
-                PGC_POSTMASTER,
-                GUC_STANDARD,
-                NULL, NULL, NULL);
+	DefineCustomStringVariable(
+		"citus.main_db",
+		gettext_noop("Which database is designated as the controldb"),
+		NULL,
+		&MainDb,
+		"",
+		PGC_POSTMASTER,
+		GUC_STANDARD,
+		NULL, NULL, NULL);
 
 	DefineCustomIntVariable(
 		"citus.max_adaptive_executor_pool_size",