diff --git a/apps/settings.c b/apps/settings.c
index 58a8e30b9d..7f6022ace2 100644
--- a/apps/settings.c
+++ b/apps/settings.c
@@ -146,7 +146,7 @@ long lasttime = 0;
 
 static unsigned int nvram_crc(char *buf, int max_len)
 {
-    return crc_32(&buf[NVRAM_DATA_START], max_len - NVRAM_DATA_START - 1, 0xffffffff);
+    return crc_32(&buf[NVRAM_DATA_START], max_len - NVRAM_DATA_START - 1, NVRAM_BLOCK_SIZE);
 }
 
 static void read_nvram_data(void)