Fixed length type

1 files changed, 1 insertions, 1 deletions

diff --git a/cat.c b/cat.c
index 6f8ea55..3345bf2 100644
--- a/cat.c
+++ b/cat.c
@@ -12,7 +12,7 @@
 void cat(int fd, char * name)
 {
 	char buffer[4096];
-	size_t length;
+	ssize_t length;
 	while (0 < (length=read(fd, buffer, sizeof(buffer))))
 		if (length != write(1, buffer, length))
 			panic("write: %s: %s", name, strerror(errno));