diff --git a/lib/utils_devpath.c b/lib/utils_devpath.c
index a81a2852..91c6500a 100644
--- a/lib/utils_devpath.c
+++ b/lib/utils_devpath.c
@@ -32,6 +32,7 @@
 
 char *crypt_lookup_dev(const char *dev_id);
 int crypt_sysfs_check_crypt_segment(const char *device, uint64_t offset, uint64_t size);
+int crypt_sysfs_get_rotational(int major, int minor, int *rotational);
 
 static char *__lookup_dev(char *path, dev_t dev, int dir_level, const int max_level)
 {
diff --git a/lib/utils_wipe.c b/lib/utils_wipe.c
index 32761303..523e9e84 100644
--- a/lib/utils_wipe.c
+++ b/lib/utils_wipe.c
@@ -78,7 +78,7 @@ static ssize_t _crypt_wipe_disk(int fd, char *buffer, uint64_t offset, uint64_t
 		else if(i >= 38 && i < 39) memset(buffer, 0xFF, size);
 
 		written = write_lseek_blockwise(fd, buffer, size, offset);
-		if (written < 0 || written != size)
+		if (written < 0 || written != (ssize_t)size)
 			return written;
 	}
 
@@ -165,7 +165,7 @@ int crypt_wipe(const char *device,
 	close(devfd);
 	free(buffer);
 
-	if (written != size || written < 0)
+	if (written != (ssize_t)size || written < 0)
 		return -EIO;
 
 	return 0;