diff --git a/.github/codeql-config.yml b/.github/codeql-config.yml
index 3423a0e..8ea45a0 100644
--- a/.github/codeql-config.yml
+++ b/.github/codeql-config.yml
@@ -15,7 +15,9 @@ query-filters:
   - exclude:
       # See: https://codeql.github.com/codeql-query-help/cpp/cpp-irregular-enum-init/
       id: cpp/irregular-enum-init
-
+  -exclude:
+      # See: https://codeql.github.com/codeql-query-help/cpp/cpp-guarded-free/
+      id: cpp/guarded-free
 # Directories to scan for vulnerabilities
 paths:
   - src  # Main source directory
diff --git a/src/h5_async_vol.c b/src/h5_async_vol.c
index 218b7a0..740754c 100644
--- a/src/h5_async_vol.c
+++ b/src/h5_async_vol.c
@@ -1431,7 +1431,6 @@ async_instance_init(int backing_thread_count)
     if (ASYNC_DBG_MSG_RANK == -1) {
         char fname[128];
         sprintf(fname, "async.log.%d", aid->mpi_rank);
-        fout_g = fopen(fname, "w");
         int fd = open(fname, O_WRONLY | O_CREAT, S_IWUSR | S_IRUSR | S_IRGRP);
         if (fd < 0) {
             fprintf(fout_g, "  [ASYNC VOL ERROR] with opening %s\n", fname);