diff --git a/CMakeLists.txt b/CMakeLists.txt
index 4b2a3b41d9..1247d8219c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1152,6 +1152,10 @@ add_library(PHY_NR_COMMON ${PHY_NR_SRC_COMMON})
 add_library(PHY_NR ${PHY_NR_SRC})
 target_link_libraries(PHY_NR nr_phy_common nr_common)
 
+add_library(PHY_NR_NO_AVX_256 ${PHY_NR_SRC})
+target_link_libraries(PHY_NR_NO_AVX_256 nr_phy_common nr_common)
+target_compile_definitions(PHY_NR_NO_AVX_256 PUBLIC USE_128BIT)
+
 add_library(PHY_NR_UE ${PHY_NR_UE_SRC})
 target_link_libraries(PHY_NR_UE PRIVATE asn1_nr_rrc_hdrs nr_phy_common nr_common)
 
diff --git a/openair1/PHY/NR_TRANSPORT/tests/CMakeLists.txt b/openair1/PHY/NR_TRANSPORT/tests/CMakeLists.txt
index c62a16dc21..1051824bf9 100644
--- a/openair1/PHY/NR_TRANSPORT/tests/CMakeLists.txt
+++ b/openair1/PHY/NR_TRANSPORT/tests/CMakeLists.txt
@@ -3,3 +3,9 @@ target_link_libraries(test_llr PRIVATE PHY_NR GTest::gtest minimal_lib)
 add_dependencies(tests test_llr)
 add_test(NAME test_llr
   COMMAND ./test_llr)
+
+add_executable(test_llr_no_avx_256 test_llr.cpp)
+target_link_libraries(test_llr_no_avx_256 PRIVATE PHY_NR_NO_AVX_256 GTest::gtest minimal_lib)
+add_dependencies(tests test_llr_no_avx_256)
+add_test(NAME test_llr_no_avx_256
+  COMMAND ./test_llr_no_avx_256)