diff --git a/xgriscv_datapath.v b/xgriscv_datapath.v
index 5313a622ce64eae4962e3b32aac6ce434f71b79a..28f0c7167a584485cebfb73b8a148827432ecfc3 100644
--- a/xgriscv_datapath.v
+++ b/xgriscv_datapath.v
@@ -59,7 +59,7 @@ module datapath(
 
 
 	//处理mux
-	mux2 #(32)   mx0(immout, rdata2, alusrcb, b);
+	mux2 #(32)   mx0(rdata2, immout, alusrcb, b);
 	mux2 #(32)   mx1(readdata, aluout, memtoreg, wdata);
 	mux3 #(32)   mx2(readdata, 0, pc, alusrca, a);