diff --git a/frontend/src/blake2.c b/frontend/src/blake2.c
index 1bbf021..d3cd530 100644
--- a/frontend/src/blake2.c
+++ b/frontend/src/blake2.c
@@ -76,15 +76,6 @@ static BLAKE2_INLINE uint64_t make64(const uint32_t a, const uint32_t b)
 		((uint64_t)(b) << 32);
 }
 
-static BLAKE2_INLINE void store32(void *const dst, const uint32_t w)
-{
-	uint8_t *const p = (uint8_t*)dst;
-	p[0] = (uint8_t)(w >>  0);
-	p[1] = (uint8_t)(w >>  8);
-	p[2] = (uint8_t)(w >> 16);
-	p[3] = (uint8_t)(w >> 24);
-}
-
 static BLAKE2_INLINE uint32_t rotr32(const uint32_t w, const unsigned c)
 {
 	return (w >> c) | (w << (32 - c));
diff --git a/frontend/src/main.c b/frontend/src/main.c
index 7fec81f..0783f6b 100644
--- a/frontend/src/main.c
+++ b/frontend/src/main.c
@@ -168,7 +168,7 @@ static int weak_passphrase(const char *str)
 	int flags[4U] = { 0, 0, 0, 0 };
 	while (*str)
 	{
-		const CHR c = *str++;
+		const int c = *str++;
 		if (isalpha(c))
 		{
 			flags[isupper(c) ? 0U : 1U] = 1;
@@ -208,7 +208,7 @@ static int generate_passphrase(const size_t length)
 		}
 		buffer[passwd_len] = '\0';
 	}
-	while ((!isalpha(buffer[0U])) || (!isalnum(buffer[passwd_len - 1U])) || weak_passphrase(buffer));
+	while ((!isalpha((int)buffer[0U])) || (!isalnum((int)buffer[passwd_len - 1U])) || weak_passphrase(buffer));
 
 	FPRINTF(stdout, T("%") T(PRIstr) T("\n\n"), buffer);
 	fflush(stdout);