diff --git a/src/mapleall/maple_me/src/irmap.cpp b/src/mapleall/maple_me/src/irmap.cpp
index 3bc4f1812de45fa8abe32ce32af407612c5bdd2f..6ccd87b8e9a36f5b869707a2dbc4567925cd3a8f 100644
--- a/src/mapleall/maple_me/src/irmap.cpp
+++ b/src/mapleall/maple_me/src/irmap.cpp
@@ -198,7 +198,7 @@ static void ComputeCastInfoForExpr(const MeExpr &expr, CastInfo &castInfo) {
       break;
     }
     case OP_retype: {
-      srcType = static_cast<const OpMeExpr&>(expr).GetOpndType();
+      srcType = expr.GetPrimType();
       castKind = CAST_retype;
       break;
     }