diff --git a/plugins-root/pst3.c b/plugins-root/pst3.c
index 7586d5f3..7852aa1c 100644
--- a/plugins-root/pst3.c
+++ b/plugins-root/pst3.c
@@ -234,6 +234,8 @@ try_again:
     printf("\n");
   }
 
+  (void) closedir(procdir);
+
   return (0);
 }