diff --git a/src/bootchart.c b/src/bootchart.c
index bb11a42..15aaa2e 100644
--- a/src/bootchart.c
+++ b/src/bootchart.c
@@ -315,7 +315,6 @@ int main(int argc, char *argv[]) {
         _cleanup_closedir_ DIR *proc = NULL;
         _cleanup_free_ char *build = NULL;
         _cleanup_fclose_ FILE *of = NULL;
-        _cleanup_close_ int sysfd = -1;
         int schfd;
         struct ps_struct *ps_first;
         double graph_start;
@@ -415,9 +414,6 @@ int main(int argc, char *argv[]) {
                 sampledata->sampletime = gettime_ns();
                 sampledata->counter = samples;
 
-                if (sysfd < 0)
-                        sysfd = open("/sys", O_RDONLY|O_CLOEXEC);
-
                 if (!build) {
                         if (parse_env_file("/etc/os-release", NEWLINE, "PRETTY_NAME", &build, NULL) == -ENOENT)
                                 parse_env_file("/usr/lib/os-release", NEWLINE, "PRETTY_NAME", &build, NULL);