diff --git a/src/backend/postmaster/autovacuum.c b/src/backend/postmaster/autovacuum.c
index 2f54485c217..3e037248d61 100644
--- a/src/backend/postmaster/autovacuum.c
+++ b/src/backend/postmaster/autovacuum.c
@@ -386,15 +386,6 @@ avlauncher_forkexec(void)
 
 	return postmaster_forkexec(ac, av);
 }
-
-/*
- * We need this set from the outside, before InitProcess is called
- */
-void
-AutovacuumLauncherIAm(void)
-{
-	am_autovacuum_launcher = true;
-}
 #endif
 
 /*
@@ -1453,15 +1444,6 @@ avworker_forkexec(void)
 
 	return postmaster_forkexec(ac, av);
 }
-
-/*
- * We need this set from the outside, before InitProcess is called
- */
-void
-AutovacuumWorkerIAm(void)
-{
-	am_autovacuum_worker = true;
-}
 #endif
 
 /*
diff --git a/src/backend/postmaster/postmaster.c b/src/backend/postmaster/postmaster.c
index 49cbd8cd05f..ae31d66930d 100644
--- a/src/backend/postmaster/postmaster.c
+++ b/src/backend/postmaster/postmaster.c
@@ -4842,12 +4842,6 @@ SubPostmasterMain(int argc, char *argv[])
 	else
 		PGSharedMemoryNoReAttach();
 
-	/* autovacuum needs this set before calling InitProcess */
-	if (strcmp(argv[1], "--forkavlauncher") == 0)
-		AutovacuumLauncherIAm();
-	if (strcmp(argv[1], "--forkavworker") == 0)
-		AutovacuumWorkerIAm();
-
 	/* Read in remaining GUC variables */
 	read_nondefault_variables();
 
diff --git a/src/include/postmaster/autovacuum.h b/src/include/postmaster/autovacuum.h
index b553e858ad4..c9ef31ae66a 100644
--- a/src/include/postmaster/autovacuum.h
+++ b/src/include/postmaster/autovacuum.h
@@ -66,8 +66,6 @@ extern void AutoVacWorkerFailed(void);
 #ifdef EXEC_BACKEND
 extern void AutoVacLauncherMain(int argc, char *argv[]) pg_attribute_noreturn();
 extern void AutoVacWorkerMain(int argc, char *argv[]) pg_attribute_noreturn();
-extern void AutovacuumWorkerIAm(void);
-extern void AutovacuumLauncherIAm(void);
 #endif
 
 extern bool AutoVacuumRequestWork(AutoVacuumWorkItemType type,