diff --git a/elkscmd/file_utils/cat.c b/elkscmd/file_utils/cat.c
index e8b9576..d4616c7 100644
--- a/elkscmd/file_utils/cat.c
+++ b/elkscmd/file_utils/cat.c
@@ -35,6 +35,8 @@ int main(int argc, char **argv)
 		if (dumpfile(STDIN_FILENO)) goto error_read;
 	} else {
 		for (i = 1; i < argc; i++) {
+			if(!strcmp(argv[1], "-h")) goto usage;
+
 			errno = 0;
 			fd = open(argv[i], O_RDONLY);
 			if (fd == -1) {
@@ -52,4 +54,11 @@ error_read:
 		argv[0], argv[i], strerror(errno));
 	close(fd);
 	exit(1);
+
+usage:
+	write(STDERR_FILENO, "concatentate file(s) or standard input to standard output.\n", 60);
+	write(STDERR_FILENO, "usage: cat [OPTIONS] [FILE]\n", 29);
+	write(STDERR_FILENO, "options: -h  help\n", 18);
+	write(STDERR_FILENO, "when no file is given or file is '-' STDIN is used for input.\n", 62);
+	exit(0);
 }