diff --git a/src/hotspot/cpu/arm/c2_MacroAssembler_arm.cpp b/src/hotspot/cpu/arm/c2_MacroAssembler_arm.cpp
index 7996f817c392e..70c16a2ab01af 100644
--- a/src/hotspot/cpu/arm/c2_MacroAssembler_arm.cpp
+++ b/src/hotspot/cpu/arm/c2_MacroAssembler_arm.cpp
@@ -148,7 +148,7 @@ void C2_MacroAssembler::fast_unlock(Register Roop, Register Rbox, Register Rscra
   // Restore the object header
   bool allow_fallthrough_on_failure = true;
   bool one_shot = true;
-  cas_for_lock_release(Rmark, Rbox, Roop, Rscratch, done, allow_fallthrough_on_failure, one_shot);
+  cas_for_lock_release(Rbox, Rmark, Roop, Rscratch, done, allow_fallthrough_on_failure, one_shot);
 
   bind(done);
 }