diff --git a/src/nasal_opcode.cpp b/src/nasal_opcode.cpp
index 3dc8030..51e4540 100644
--- a/src/nasal_opcode.cpp
+++ b/src/nasal_opcode.cpp
@@ -102,9 +102,9 @@ void codestream::dump(std::ostream& out) const {
             out << hex << "0x" << num << dec; break;
         case op_callb:
             out << hex << "0x" << num << dec;
-            out << " [" << natives[num].name << "@0x";
+            out << " <" << natives[num].name << "@0x";
             out << hex << reinterpret_cast<u64>(natives[num].func) << dec;
-            out << "]";
+            out << ">";
             break;
         case op_upval:
         case op_mupval:
diff --git a/test/watchdog.nas b/test/watchdog.nas
index 3f205e4..1e4360f 100644
--- a/test/watchdog.nas
+++ b/test/watchdog.nas
@@ -75,8 +75,8 @@ while(1) {
 
         # check if active every 0.5s
         var exited = false;
-        for(var t = 0; t<=4; t+=0.1) {
-            unix.sleep(0.1);
+        while(1) {
+            unix.sleep(0.5);
             if (!subprocess.active(subproc)) {
                 exited = true;
                 break;