diff --git a/pgxn/neon/neon.c b/pgxn/neon/neon.c
index 9cdbf4a126..6afca61fae 100644
--- a/pgxn/neon/neon.c
+++ b/pgxn/neon/neon.c
@@ -68,10 +68,10 @@ InitLogicalReplicationMonitor(void)
 
 	DefineCustomIntVariable(
 							"neon.logical_replication_max_snap_files",
-							"Maximum allowed logical replication .snap files",
+							"Maximum allowed logical replication .snap files. When exceeded, slots are dropped until the limit is met. -1 disables the limit.",
 							NULL,
 							&logical_replication_max_snap_files,
-							300, 0, INT_MAX,
+							300, -1, INT_MAX,
 							PGC_SIGHUP,
 							0,
 							NULL, NULL, NULL);