diff --git a/coreutils/cat.c b/coreutils/cat.c
index 2254a15..8ecda05 100644
--- a/coreutils/cat.c
+++ b/coreutils/cat.c
@@ -5,7 +5,7 @@
 #include <unistd.h>
 
 void cat(const int fd) {
-	char buf[4096];
+	char buf[8096];
 	ssize_t len;
 
 	while ((len = read(fd, buf, sizeof(buf))) > 0)
@@ -14,7 +14,7 @@ void cat(const int fd) {
 }
 
 int main(const int argc, const char **argv) {
-	if (argc == 1)
+	if (argc == 1 || argv[1][0] == '-')
 		cat(STDIN_FILENO);
 
 	else {