diff --git a/src/cpu/x86/vm/c1_LIRGenerator_x86.cpp b/src/cpu/x86/vm/c1_LIRGenerator_x86.cpp
index 4a30d597b3e7a30eacb678afa5ebf18776c4d9f0..b4e8223e1f541f5bf1d124257dade91e3c4ad6d7 100644
--- a/src/cpu/x86/vm/c1_LIRGenerator_x86.cpp
+++ b/src/cpu/x86/vm/c1_LIRGenerator_x86.cpp
@@ -941,6 +941,8 @@ void LIRGenerator::do_update_CRC32(Intrinsic* x) {
     case vmIntrinsics::_updateCRC32: {
       LIRItem crc(x->argument_at(0), this);
       LIRItem val(x->argument_at(1), this);
+      // val is destroyed by update_crc32
+      val.set_destroys_register();
       crc.load_item();
       val.load_item();
       __ update_crc32(crc.result(), val.result(), result);