1 files changed, 2 insertions, 1 deletions
diff --git a/src/opt.h b/src/opt.h
index 829ba5c..47ac47c 100644
--- a/src/opt.h
+++ b/src/opt.h
@@ -23,7 +23,8 @@
 typedef enum {
     perf_opt_string,
     perf_opt_boolean,
-    perf_opt_uint,
+    perf_opt_uint, // can not be zero
+    perf_opt_zpint, // zero or positive
     perf_opt_timeval,
     perf_opt_double,
     perf_opt_port,