diff --git a/test/lpf_8_test.cc b/test/lpf_8_test.cc
index 45cd6618c..58bcb05d1 100644
--- a/test/lpf_8_test.cc
+++ b/test/lpf_8_test.cc
@@ -458,6 +458,7 @@ using std::tr1::make_tuple;
 INSTANTIATE_TEST_CASE_P(
     MMX, Loop8Test6Param,
     ::testing::Values(
+        make_tuple(&vpx_lpf_horizontal_4_mmx, &vpx_lpf_horizontal_4_c, 8, 1),
         make_tuple(&vpx_lpf_vertical_4_mmx, &vpx_lpf_vertical_4_c, 8, 1)));
 #endif  // HAVE_MMX
 
@@ -629,6 +630,7 @@ INSTANTIATE_TEST_CASE_P(
 INSTANTIATE_TEST_CASE_P(
     MSA, Loop8Test6Param,
     ::testing::Values(
+        make_tuple(&vpx_lpf_horizontal_4_msa, &vpx_lpf_horizontal_4_c, 8, 1),
         make_tuple(&vpx_lpf_horizontal_8_msa, &vpx_lpf_horizontal_8_c, 8, 1),
         make_tuple(&vpx_lpf_horizontal_16_msa, &vpx_lpf_horizontal_16_c, 8, 1),
         make_tuple(&vpx_lpf_horizontal_16_msa, &vpx_lpf_horizontal_16_c, 8, 2),