diff --git a/js/src/jit/MacroAssembler.h b/js/src/jit/MacroAssembler.h
index af7de1c16a..bf04575821 100644
--- a/js/src/jit/MacroAssembler.h
+++ b/js/src/jit/MacroAssembler.h
@@ -1656,10 +1656,12 @@ class MacroAssembler : public MacroAssemblerSpecific
                                    Register temp, Label* failure);
 
     Register extractString(const Address& address, Register scratch) {
-        return extractObject(address, scratch);
+        unboxString(address, scratch);
+        return scratch;
     }
     Register extractString(const ValueOperand& value, Register scratch) {
-        return extractObject(value, scratch);
+        unboxString(value, scratch);
+        return scratch;
     }
 
     using MacroAssemblerSpecific::extractTag;
diff --git a/js/src/jit/loongarch64/MacroAssembler-loongarch64.cpp b/js/src/jit/loongarch64/MacroAssembler-loongarch64.cpp
index b9c67dd958..d39eda722a 100644
--- a/js/src/jit/loongarch64/MacroAssembler-loongarch64.cpp
+++ b/js/src/jit/loongarch64/MacroAssembler-loongarch64.cpp
@@ -2764,6 +2764,10 @@ template void MacroAssembler::storeUnboxedValue(const ConstantOrRegister& value,
                                                 MIRType valueType,
                                                 const Address& dest,
                                                 MIRType slotType);
+template void MacroAssembler::storeUnboxedValue(const ConstantOrRegister& value,
+                                                MIRType valueType,
+                                                const BaseIndex& dest,
+                                                MIRType slotType);
 template void MacroAssembler::storeUnboxedValue(
     const ConstantOrRegister& value, MIRType valueType,
     const BaseObjectElementIndex& dest, MIRType slotType);