diff --git a/release/src-rt-6.x.4708/router/nvram_arm/nvram_linux.c b/release/src-rt-6.x.4708/router/nvram_arm/nvram_linux.c
index 9d7af7d083..3078041b32 100644
--- a/release/src-rt-6.x.4708/router/nvram_arm/nvram_linux.c
+++ b/release/src-rt-6.x.4708/router/nvram_arm/nvram_linux.c
@@ -162,7 +162,7 @@ _nvram_set(const char *name, const char *value)
 {
 	size_t count = strlen(name) + 1;
 	char tmp[100], *buf = tmp;
-	int ret;
+	unsigned int ret;
 
 	if ((ret = nvram_init(NULL)))
 		return ret;