diff --git a/compiler/optimizing/nodes.cc b/compiler/optimizing/nodes.cc
index cabc078..b9e284f 100644
--- a/compiler/optimizing/nodes.cc
+++ b/compiler/optimizing/nodes.cc
@@ -1357,7 +1357,9 @@
 void HInstruction::MoveBefore(HInstruction* cursor) {
   DCHECK(!IsPhi());
   DCHECK(!IsControlFlow());
-  DCHECK(CanBeMoved());
+  DCHECK(CanBeMoved() ||
+         // HShouldDeoptimizeFlag can only be moved by CHAGuardOptimization.
+         IsShouldDeoptimizeFlag());
   DCHECK(!cursor->IsPhi());
 
   next_->previous_ = previous_;