diff --git a/code/leak.c b/code/leak.c
index 6daf44c62..27f63ef5b 100644
--- a/code/leak.c
+++ b/code/leak.c
@@ -1,6 +1,7 @@
 #define _GNU_SOURCE
 #include <sys/socket.h>
 
+#include <errno.h>
 #include <fcntl.h>
 #include <stdio.h>
 #include <stdlib.h>
@@ -51,7 +52,7 @@ main(void)
 		int ret;
 		ret = pipe2(spray[i], O_NONBLOCK);
 		if (ret < 0) {
-			printf("main: error: object %lu pipe2: %i\n", i, ret);
+			printf("main: error: object %lu pipe2: %i\n", i, errno);
 			exit(-1);
 		}
 		ret = fcntl(spray[i][0], F_SETPIPE_SZ, 8192);