diff --git a/src/gausskernel/process/postmaster/postmaster.cpp b/src/gausskernel/process/postmaster/postmaster.cpp
index e53344441..f7504f13f 100755
--- a/src/gausskernel/process/postmaster/postmaster.cpp
+++ b/src/gausskernel/process/postmaster/postmaster.cpp
@@ -1180,7 +1180,7 @@ int PostmasterMain(int argc, char* argv[])
      * common help() function in main/main.c.
      */
     initOptParseContext(&optCtxt);
-    while ((opt = getopt_r(argc, argv, "A:B:bc:C:D:d:EeFf:h:ijk:lM:N:nOo:Pp:Rr:S:sTt:u:W:-:", &optCtxt)) != -1) {
+    while ((opt = getopt_r(argc, argv, "A:B:bc:C:D:d:EeFf:h:ijk:lM:N:no:Pp:Rr:S:sTt:u:W:-:", &optCtxt)) != -1) {
         switch (opt) {
             case 'A':
                 SetConfigOption("debug_assertions", optCtxt.optarg, PGC_POSTMASTER, PGC_S_ARGV);