diff --git a/ueventd/list.c b/ueventd/list.c
index 071ba76..805d095 100755
--- a/ueventd/list.c
+++ b/ueventd/list.c
@@ -15,6 +15,8 @@
 
 #include "list.h"
 
+#include <stddef.h>
+
 void ListInit(struct ListNode *node)
 {
     if (node == NULL) {
diff --git a/ueventd/ueventd.c b/ueventd/ueventd.c
index da19f6a..db583d7 100755
--- a/ueventd/ueventd.c
+++ b/ueventd/ueventd.c
@@ -119,7 +119,7 @@ static void HandleUevent(const struct Uevent *uevent)
 
 static void AddUevent(struct Uevent *uevent, const char *event, size_t len)
 {
-    if (uevent == NULL || uevent == NULL || len == 0) {
+    if (uevent == NULL || event == NULL || len == 0) {
         return;
     }
 
@@ -168,7 +168,7 @@ static void ParseUeventMessage(const char *buffer, ssize_t length, struct Uevent
     uevent->devNum = -1;
     ssize_t pos = 0;
     while (pos < length) {
-        char *event = buffer + pos;
+        const event = buffer + pos;
         size_t len = strlen(event);
         if (len == 0) {
             break;