diff --git a/pgxn/neon_walredo/walredoproc.c b/pgxn/neon_walredo/walredoproc.c
index 37abb3fa03f1..619b7255aee3 100644
--- a/pgxn/neon_walredo/walredoproc.c
+++ b/pgxn/neon_walredo/walredoproc.c
@@ -453,7 +453,6 @@ WalRedoMain(int argc, char *argv[])
 static void
 CreateFakeSharedMemoryAndSemaphores(void)
 {
-	PGShmemHeader *shim = NULL;
 	PGShmemHeader *hdr;
 	Size		size;
 	int			numSemas;
@@ -486,7 +485,6 @@ CreateFakeSharedMemoryAndSemaphores(void)
 		hdr->totalsize = size;
 		hdr->freeoffset = MAXALIGN(sizeof(PGShmemHeader));
 
-		shim = hdr;
 		UsedShmemSegAddr = hdr;
 		UsedShmemSegID = (unsigned long) 42; /* not relevant for non-shared memory */
 	}
@@ -523,8 +521,6 @@ CreateFakeSharedMemoryAndSemaphores(void)
 	 */
 	InitShmemIndex();
 
-	dsm_shmem_init();
-
 	/*
 	 * Set up xlog, clog, and buffers
 	 */
@@ -599,10 +595,6 @@ CreateFakeSharedMemoryAndSemaphores(void)
 		ShmemBackendArrayAllocation();
 #endif
 
-	/* Initialize dynamic shared memory facilities. */
-	if (!IsUnderPostmaster)
-		dsm_postmaster_startup(shim);
-
 	/*
 	 * Now give loadable modules a chance to set up their shmem allocations
 	 */