diff --git a/hphp/runtime/vm/as.cpp b/hphp/runtime/vm/as.cpp
index c22180f22..68ab75fe6 100644
--- a/hphp/runtime/vm/as.cpp
+++ b/hphp/runtime/vm/as.cpp
@@ -905,6 +905,7 @@ std::vector<uint32_t> read_itervec(AsmState& as) {
 
     if (!as.in.readword(word)) as.error("Was expecting iterator id.");
     uint32_t iterId = folly::to<uint32_t>(word);
+    ret.push_back(iterId);
 
     if (!isdigit(word.back())) {
       if (word.back() == '>') break;
diff --git a/hphp/test/quick/asm_iterbreak.hhas b/hphp/test/quick/asm_iterbreak.hhas
index bd6d73ce9..3771be293 100644
--- a/hphp/test/quick/asm_iterbreak.hhas
+++ b/hphp/test/quick/asm_iterbreak.hhas
@@ -43,7 +43,8 @@ startOuter:
   PopC
 
   CGetL $0
-  IterInitK 1 endInner $3 $4
+  Box
+  MIterInitK 1 endInner $3 $4
 startInner:
   String "\n"
   CGetL2 $3
@@ -57,8 +58,8 @@ startInner:
   Print
   PopC
 
-  IterBreak <(Iter) 1, (Iter) 0> endOuter
-  IterNextK 1 startInner $3 $4
+  IterBreak <(MIter) 1, (Iter) 0> endOuter
+  MIterNextK 1 startInner $3 $4
 endInner:
   IterNextK 0 startOuter $1 $2
 endOuter: