diff --git a/pgxn/neon/Makefile b/pgxn/neon/Makefile
index b8d3e35b81..859fed46fe 100644
--- a/pgxn/neon/Makefile
+++ b/pgxn/neon/Makefile
@@ -13,7 +13,7 @@ OBJS = \
 	walproposer.o \
 	walproposer_utils.o
 
-PG_CPPFLAGS = -I$(libpq_srcdir)
+PG_CPPFLAGS = -I$(libpq_srcdir) -DSIMLIB
 PG_LIBS = $(libpq)
 
 EXTENSION = neon
diff --git a/pgxn/neon/walproposer.c b/pgxn/neon/walproposer.c
index 81a2b51a2a..5842c1716a 100644
--- a/pgxn/neon/walproposer.c
+++ b/pgxn/neon/walproposer.c
@@ -83,7 +83,6 @@ char	   *neon_tenant_walproposer = NULL;
 char	   *neon_safekeeper_token_walproposer = NULL;
 
 #define WAL_PROPOSER_SLOT_NAME "wal_proposer_slot"
-#define SIMLIB
 
 #ifdef SIMLIB
 #include "rust_bindings.h"
@@ -1283,6 +1282,7 @@ HandleElectedProposer(void)
 	}
 	else if (syncSafekeepers)
 	{
+		// elog(FATAL, "synced %X/%X", LSN_FORMAT_ARGS(propEpochStartLsn));
 		/* Sync is not needed: just exit */
 		fprintf(stdout, "%X/%X\n", LSN_FORMAT_ARGS(propEpochStartLsn));
 		exit(0);
diff --git a/pgxn/neon/walproposer.h b/pgxn/neon/walproposer.h
index 35807a4c88..c18612a8ba 100644
--- a/pgxn/neon/walproposer.h
+++ b/pgxn/neon/walproposer.h
@@ -10,8 +10,6 @@
 #include "utils/uuid.h"
 #include "replication/walreceiver.h"
 
-#define SIMLIB
-
 #define SK_MAGIC 0xCafeCeefu
 #define SK_PROTOCOL_VERSION 2