diff --git a/CMakeLists.txt b/CMakeLists.txt
index 8308f5234..59acb05cb 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -174,6 +174,25 @@ if(FSFW_BUILD_TESTS)
   configure_file(unittests/testcfg/FSFWConfig.h.in FSFWConfig.h)
   configure_file(unittests/testcfg/TestsConfig.h.in tests/TestsConfig.h)
 
+  if(FSFW_OSAL MATCHES "freertos") 
+    message(
+      STATUS
+        "${MSG_PREFIX} Downloading FreeRTOS with FetchContent"
+    )
+    include(FetchContent)
+
+    FetchContent_Declare(
+      FreeRTOS
+      GIT_REPOSITORY https://egit.irs.uni-stuttgart.de/fsfw/FreeRTOS-LTS
+      GIT_TAG develop
+      GIT_SUBMODULES FreeRTOS/FreeRTOS-Kernel)
+
+    list(APPEND FSFW_FETCH_CONTENT_TARGETS FreeRTOS)
+
+    set(LIB_OS_NAME FreeRTOS)
+    target_include_directories(FreeRTOS PRIVATE unittests/FreeRTOS-Config)
+  endif()
+
   project(${FSFW_TEST_TGT} CXX C)
   add_executable(${FSFW_TEST_TGT})
   if(IPO_SUPPORTED AND FSFW_ENABLE_IPO)
@@ -226,6 +245,9 @@ if(FSFW_FETCH_CONTENT_TARGETS)
     # GitHub issue: https://github.com/catchorg/Catch2/issues/2417
     set_target_properties(Catch2 PROPERTIES DEBUG_POSTFIX "")
   endif()
+
+  
+
 endif()
 
 set(FSFW_CORE_INC_PATH "inc")
diff --git a/unittests/FreeRTOS-Config/FreeRTOSConfig.h b/unittests/FreeRTOS-Config/FreeRTOSConfig.h
new file mode 100644
index 000000000..e69de29bb