diff --git a/src/xenia/cpu/ppc/ppc_emit_alu.cc b/src/xenia/cpu/ppc/ppc_emit_alu.cc
index 9dbe68286..72780974f 100644
--- a/src/xenia/cpu/ppc/ppc_emit_alu.cc
+++ b/src/xenia/cpu/ppc/ppc_emit_alu.cc
@@ -960,7 +960,7 @@ int InstrEmit_rlwimix(PPCHIRBuilder& f, const InstrData& i) {
   // RA <- r&m | (RA)&¬m
   Value* v = f.LoadGPR(i.M.RT);
   // (x||x)
-  v = f.Or(f.Shl(v, 32), f.And(v, f.LoadConstantUint64(0xFFFFFFFF)));
+  v = f.Or(f.Shl(v, 32), f.ZeroExtend(f.Truncate(v, INT32_TYPE), INT64_TYPE));
   if (i.M.SH) {
     v = f.RotateLeft(v, f.LoadConstantInt8(i.M.SH));
   }
@@ -1018,7 +1018,7 @@ int InstrEmit_rlwnmx(PPCHIRBuilder& f, const InstrData& i) {
       f.And(f.Truncate(f.LoadGPR(i.M.SH), INT8_TYPE), f.LoadConstantInt8(0x1F));
   Value* v = f.LoadGPR(i.M.RT);
   // (x||x)
-  v = f.Or(f.Shl(v, 32), f.And(v, f.LoadConstantUint64(0xFFFFFFFF)));
+  v = f.Or(f.Shl(v, 32), f.ZeroExtend(f.Truncate(v, INT32_TYPE), INT64_TYPE));
   v = f.RotateLeft(v, sh);
   v = f.And(v, f.LoadConstantUint64(XEMASK(i.M.MB + 32, i.M.ME + 32)));
   f.StoreGPR(i.M.RA, v);