diff --git a/source/quirc/decode.c b/source/quirc/decode.c
index 93520c4..3219167 100644
--- a/source/quirc/decode.c
+++ b/source/quirc/decode.c
@@ -117,7 +117,7 @@ static const uint8_t gf256_log[256] = {
 	0x74, 0xd6, 0xf4, 0xea, 0xa8, 0x50, 0x58, 0xaf
 };
 
-const static struct galois_field gf256 = {
+static const struct galois_field gf256 = {
 	.p = 255,
 	.log = gf256_log,
 	.exp = gf256_exp
@@ -873,7 +873,7 @@ static quirc_decode_error_t decode_payload(struct quirc_data *data,
 done:
 
 	/* Add nul terminator to all payloads */
-	if (data->payload_len >= sizeof(data->payload))
+	if ((unsigned int)data->payload_len >= sizeof(data->payload))
 		data->payload_len--;
 	data->payload[data->payload_len] = 0;
 
diff --git a/source/quirc/identify.c b/source/quirc/identify.c
index 8646989..122535a 100644
--- a/source/quirc/identify.c
+++ b/source/quirc/identify.c
@@ -348,6 +348,7 @@ static void threshold(struct quirc *q)
 
 static void area_count(void *user_data, int y, int left, int right)
 {
+	(void)y;
 	((struct quirc_region *)user_data)->count += right - left + 1;
 }
 
diff --git a/source/quirc/quirc.c b/source/quirc/quirc.c
index 62bc285..c9be289 100644
--- a/source/quirc/quirc.c
+++ b/source/quirc/quirc.c
@@ -84,7 +84,8 @@ static const char *const error_table[] = {
 
 const char *quirc_strerror(quirc_decode_error_t err)
 {
-	if (err >= 0 && err < sizeof(error_table) / sizeof(error_table[0]))
+	// note from Anemone3DS dev - L88 used to compare err >= 0, but err is always positive
+	if (err < sizeof(error_table) / sizeof(error_table[0]))
 		return error_table[err];
 
 	return "Unknown error";