diff --git a/src/main.rs b/src/main.rs
index af044a8..20d1ba3 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -59,10 +59,10 @@ impl Env {
         }
     }
     fn fmt(&self) {
+        print!("{{");
         let mut i = 0;
         let len = self.hashmap.len();
         if len > 0 {
-            print!("{{");
             for (key, val) in self.hashmap.iter() {
                 print!("{:?} :", key);
                 match val {
@@ -273,7 +273,7 @@ fn fmt_tags(tagmask: u32) {
     let mut current: u32;
     while {
         current = 1 << tag;
-        current <= tagmask || tag < 32
+        tag == 32 || current <= tagmask
     } {
         tag += 1;
         if current != tagmask && (tagmask / current) % 2 != 0 {