diff --git a/library/spdm_crypt_lib/CMakeLists.txt b/library/spdm_crypt_lib/CMakeLists.txt
index 89d7bf9df85..d7fd02819cf 100644
--- a/library/spdm_crypt_lib/CMakeLists.txt
+++ b/library/spdm_crypt_lib/CMakeLists.txt
@@ -5,7 +5,6 @@ add_library(spdm_crypt_lib STATIC "")
 target_include_directories(spdm_crypt_lib
     PRIVATE
         ${LIBSPDM_DIR}/include
-        ${LIBSPDM_DIR}/os_stub
 )
 
 target_sources(spdm_crypt_lib
diff --git a/library/spdm_responder_lib/CMakeLists.txt b/library/spdm_responder_lib/CMakeLists.txt
index 6b5c1214f85..97af993dd8e 100644
--- a/library/spdm_responder_lib/CMakeLists.txt
+++ b/library/spdm_responder_lib/CMakeLists.txt
@@ -5,7 +5,6 @@ add_library(spdm_responder_lib STATIC "")
 target_include_directories(spdm_responder_lib
     PRIVATE
         ${LIBSPDM_DIR}/include
-        ${LIBSPDM_DIR}/os_stub
 )
 
 target_sources(spdm_responder_lib
@@ -49,4 +48,4 @@ target_sources(spdm_responder_lib
         libspdm_rsp_measurement_extension_log.c
         libspdm_rsp_get_key_pair_info.c
         libspdm_rsp_set_key_pair_info_ack.c
-)
\ No newline at end of file
+)