diff --git a/js/src/jit/loongarch64/Lowering-loongarch64.h b/js/src/jit/loongarch64/Lowering-loongarch64.h
index 439ef41f1b..e1d8e483c0 100644
--- a/js/src/jit/loongarch64/Lowering-loongarch64.h
+++ b/js/src/jit/loongarch64/Lowering-loongarch64.h
@@ -29,6 +29,8 @@ class LIRGeneratorLoongArch64 : public LIRGeneratorMIPSShared
         return temp();
     }
 
+    bool needTempForPostBarrier() { return true; }
+
     void lowerUntypedPhiInput(MPhi* phi, uint32_t inputPosition, LBlock* block, size_t lirIndex);
     void defineUntypedPhi(MPhi* phi, size_t lirIndex);