diff --git a/src/cgroup.c b/src/cgroup.c
index 61711162..07b68cf4 100644
--- a/src/cgroup.c
+++ b/src/cgroup.c
@@ -212,6 +212,8 @@ static void cgroup_handle_event(char *event, uint32_t mask)
 
 		break;
 	}
+
+	fclose(fp);
 }
 
 static void cgroup_events_cb(uev_t *w, void *arg, int events)