diff --git a/proc.c b/proc.c
index 0c7f119..3ee2f0a 100644
--- a/proc.c
+++ b/proc.c
@@ -442,7 +442,7 @@ procdump(void)
   for(p = ptable.proc; p < &ptable.proc[NPROC]; p++){
     if(p->state == UNUSED)
       continue;
-    if(p->state >= 0 && p->state < NELEM(states) && states[p->state])
+    if(p->state && p->state < NELEM(states) && states[p->state])
       state = states[p->state];
     else
       state = "???";