diff --git a/drivers/at24cxxx/at24cxxx.c b/drivers/at24cxxx/at24cxxx.c
index b3b9e8824d8f..c40af4d4ee87 100644
--- a/drivers/at24cxxx/at24cxxx.c
+++ b/drivers/at24cxxx/at24cxxx.c
@@ -188,7 +188,7 @@ int _write(const at24cxxx_t *dev, uint32_t pos, const void *data, size_t len)
 static
 int _set(const at24cxxx_t *dev, uint32_t pos, uint8_t val, size_t len)
 {
-    int check;
+    int check = 0;
     uint8_t set_buffer[AT24CXXX_SET_BUF_SIZE];
 
     memset(set_buffer, val, sizeof(set_buffer));