diff --git a/src/xenia/cpu/ppc/testing/instr_vpkd3d128.s b/src/xenia/cpu/ppc/testing/instr_vpkd3d128.s
index 7156dc4a7..397cfce7c 100644
--- a/src/xenia/cpu/ppc/testing/instr_vpkd3d128.s
+++ b/src/xenia/cpu/ppc/testing/instr_vpkd3d128.s
@@ -36,6 +36,14 @@ test_vpkd3d128_d3dcolor_invalid_1:
   blr
   #_ REGISTER_OUT v3 [40800000, 40000000, C2F60000, 4B3BDF83]
   #_ REGISTER_OUT v4 [CDCDCDCD, CDCDCDCD, CDCDCDCD, FFFF0000]
+test_vpkd3d128_d3dcolor_invalid_2:
+  #_ REGISTER_IN v3 [40800000, 40000000, C2F60000, FFFFFFFF]
+  #_ REGISTER_IN v4 [CDCDCDCD, CDCDCDCD, CDCDCDCD, CDCDCDCD]
+  # vpkd3d128 v4, v3, 0, 1, 0
+  .long 0x18811E10
+  blr
+  #_ REGISTER_OUT v3 [40800000, 40000000, C2F60000, FFFFFFFF]
+  #_ REGISTER_OUT v4 [CDCDCDCD, CDCDCDCD, CDCDCDCD, 00FF0000]
 
 test_vpkd3d128_d3dcolor_1_0:
   #_ REGISTER_IN v3 [40400001, 40400002, 40400003, 40400004]