diff --git a/lib/tcrypt/tcrypt.c b/lib/tcrypt/tcrypt.c
index 1672c718..b1ebd051 100644
--- a/lib/tcrypt/tcrypt.c
+++ b/lib/tcrypt/tcrypt.c
@@ -471,16 +471,12 @@ static int TCRYPT_init_hdr(struct crypt_device *cd,
 			   struct crypt_params_tcrypt *params)
 {
 	unsigned char pwd[TCRYPT_KEY_POOL_LEN] = {};
-	size_t passphrase_size, alignment;
+	size_t passphrase_size;
 	char *key;
 	unsigned int i, skipped = 0;
 	int r = -EINVAL, legacy_modes;
 
-	alignment = crypt_getpagesize();
-	if (alignment < 0)
-		return -EINVAL;
-
-	if (posix_memalign((void*)&key, alignment, TCRYPT_HDR_KEY_LEN))
+	if (posix_memalign((void*)&key, crypt_getpagesize(), TCRYPT_HDR_KEY_LEN))
 		return -ENOMEM;
 
 	if (params->keyfiles_count)
diff --git a/lib/utils.c b/lib/utils.c
index 22315227..eef78911 100644
--- a/lib/utils.c
+++ b/lib/utils.c
@@ -30,7 +30,8 @@
 
 unsigned crypt_getpagesize(void)
 {
-	return (unsigned)sysconf(_SC_PAGESIZE);
+	long r = sysconf(_SC_PAGESIZE);
+	return r < 0 ? DEFAULT_MEM_ALIGNMENT : r;
 }
 
 static int get_alignment(int fd)
diff --git a/lib/utils_benchmark.c b/lib/utils_benchmark.c
index f3923828..4ee0c033 100644
--- a/lib/utils_benchmark.c
+++ b/lib/utils_benchmark.c
@@ -128,14 +128,9 @@ static int cipher_perf(struct cipher_perf *cp,
 {
 	long ms_enc, ms_dec, ms;
 	int repeat_enc, repeat_dec;
-	size_t alignment;
 	void *buf = NULL;
 
-	alignment = crypt_getpagesize();
-	if (alignment < 0)
-		return -EINVAL;
-
-	if (posix_memalign(&buf, alignment, cp->buffer_size))
+	if (posix_memalign(&buf, crypt_getpagesize(), cp->buffer_size))
 		return -ENOMEM;
 
 	ms_enc = 0;