diff --git a/src/x64/codegen-x64.cc b/src/x64/codegen-x64.cc
index e7f3a448c7..f3ee40c13b 100644
--- a/src/x64/codegen-x64.cc
+++ b/src/x64/codegen-x64.cc
@@ -1645,6 +1645,9 @@ void CodeGenerator::GenerateFastSmiLoop(ForStatement* node) {
   Visit(node->init());
 
   JumpTarget loop(JumpTarget::BIDIRECTIONAL);
+  // Set type and stack height of BreakTargets.
+  node->continue_target()->set_direction(JumpTarget::FORWARD_ONLY);
+  node->break_target()->set_direction(JumpTarget::FORWARD_ONLY);
 
   IncrementLoopNesting();
   loop.Bind();