diff --git a/fs/proc/include/proc_fs.h b/fs/proc/include/proc_fs.h
index ed1f6fcb4918c346671ee0dc22419596d74034fc..14bb5ff338fcb72f86f41d942fcbca14ad650067 100644
--- a/fs/proc/include/proc_fs.h
+++ b/fs/proc/include/proc_fs.h
@@ -53,6 +53,9 @@ extern "C" {
 typedef unsigned short fmode_t;
 #define PROC_ERROR (-1)
 
+/* Default file mode for procfs */
+#define PROCFS_DEFAULT_MODE 0550
+
 /* 64bit hashes as llseek() offset (for directories) */
 #define FMODE_64BITHASH   ((fmode_t)0x400)
 /* 32bit hashes as llseek() offset (for directories) */
diff --git a/fs/proc/os_adapt/proc_init.c b/fs/proc/os_adapt/proc_init.c
index ec47b2956f61826c5da4012b8df585b03731a086..e8dc2df1a78c3f686daeb0ef369ecebe2be0920f 100644
--- a/fs/proc/os_adapt/proc_init.c
+++ b/fs/proc/os_adapt/proc_init.c
@@ -45,7 +45,7 @@ void ProcFsInit(void)
 {
     int ret;
 
-    ret = mkdir(PROCFS_MOUNT_POINT, 0);
+    ret = mkdir(PROCFS_MOUNT_POINT, PROCFS_DEFAULT_MODE);
     if (ret < 0) {
         PRINT_ERR("failed to mkdir %s, errno = %d\n", PROCFS_MOUNT_POINT, get_errno());
         return;
diff --git a/fs/proc/os_adapt/proc_vfs.c b/fs/proc/os_adapt/proc_vfs.c
index 7cabbaf9eca55130268174104c5e9a705724818c..3876967c07e33b357605802cd79b8d4a78cdf2a8 100644
--- a/fs/proc/os_adapt/proc_vfs.c
+++ b/fs/proc/os_adapt/proc_vfs.c
@@ -41,8 +41,6 @@
 #include "los_tables.h"
 #include "internal.h"
 
-#define PROCFS_DEFAULT_MODE 0555
-
 #ifdef LOSCFG_FS_PROC
 static struct VnodeOps g_procfsVops;
 static struct file_operations_vfs g_procfsFops;
diff --git a/fs/proc/src/proc_file.c b/fs/proc/src/proc_file.c
index 331be79cfae4f9e73f10342b08142e414d0f0ee7..9eebcd4633d93dee209dad2551efa852bd156aab 100644
--- a/fs/proc/src/proc_file.c
+++ b/fs/proc/src/proc_file.c
@@ -49,7 +49,7 @@ static struct ProcFile g_procPf = {
 
 static struct ProcDirEntry g_procRootDirEntry = {
     .nameLen     = 5,
-    .mode        = S_IFDIR | S_IRUSR | S_IXUSR | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH,
+    .mode        = S_IFDIR | PROCFS_DEFAULT_MODE,
     .count       = ATOMIC_INIT(1),
     .procFileOps = NULL,
     .parent      = &g_procRootDirEntry,
diff --git a/syscall/fs_syscall.c b/syscall/fs_syscall.c
index f045b376962f7ceb7926a7c5fcb6183be08092cb..b0e0243f304420efdbf317fb4bebab684930244e 100644
--- a/syscall/fs_syscall.c
+++ b/syscall/fs_syscall.c
@@ -307,7 +307,7 @@ int SysOpen(const char *path, int oflags, ...)
         goto ERROUT;
     }
 
-    if (oflags & O_CLOEXEC) {
+    if ((unsigned int)oflags & O_CLOEXEC) {
         SetCloexecFlag(procFd);
     }
 
@@ -1640,7 +1640,7 @@ int SysOpenat(int dirfd, const char *path, int oflags, ...)
         goto ERROUT;
     }
 
-    if (oflags & O_CLOEXEC) {
+    if ((unsigned int)oflags & O_CLOEXEC) {
         SetCloexecFlag(procFd);
     }