diff --git a/js/src/jit/loongarch64/SharedICRegisters-loongarch64.h b/js/src/jit/loongarch64/SharedICRegisters-loongarch64.h
index 1de49dc39a..f3062ec43a 100644
--- a/js/src/jit/loongarch64/SharedICRegisters-loongarch64.h
+++ b/js/src/jit/loongarch64/SharedICRegisters-loongarch64.h
@@ -15,7 +15,7 @@ namespace js {
 namespace jit {
 
 // Must be a callee-saved register for preservation around generateEnterJIT().
-static constexpr Register BaselineFrameReg = s0;
+static constexpr Register BaselineFrameReg = s5;
 static constexpr Register BaselineStackReg = sp;
 
 // ValueOperands R0, R1, and R2.