diff --git a/src/compiler/codegen/CodegenUtil.cc b/src/compiler/codegen/CodegenUtil.cc
index 2450058..b0a1e44 100644
--- a/src/compiler/codegen/CodegenUtil.cc
+++ b/src/compiler/codegen/CodegenUtil.cc
@@ -258,7 +258,7 @@
     PromotionMap vRegMap = cUnit->promotionMap[i];
     std::string buf;
     if (vRegMap.fpLocation == kLocPhysReg) {
-      StringAppendF(&buf, " : s%d", vRegMap.fpReg & FP_REG_MASK);
+      StringAppendF(&buf, " : s%d", vRegMap.fpReg & fpRegMask());
     }
 
     std::string buf3;