diff --git a/runtime/vm/compiler/backend/il_riscv.cc b/runtime/vm/compiler/backend/il_riscv.cc
index c9067af..51aa2b4 100644
--- a/runtime/vm/compiler/backend/il_riscv.cc
+++ b/runtime/vm/compiler/backend/il_riscv.cc
@@ -132,8 +132,7 @@
     }
     case kUnboxedDouble: {
       const auto out = locs()->out(0).fpu_reg();
-      const intptr_t kDoubleSizeLog2 = 3;
-      __ slli(TMP, index, kDoubleSizeLog2 - kSmiTagSize);
+      __ slli(TMP, index, kWordSizeLog2 - kSmiTagSize);
       __ add(TMP, TMP, base_reg());
       __ LoadDFromOffset(out, TMP, offset());
       break;