diff --git a/fsfw.mk b/fsfw.mk
index c2c6e747..3639717b 100644
--- a/fsfw.mk
+++ b/fsfw.mk
@@ -28,12 +28,25 @@ CXXSRC += $(wildcard $(FRAMEWORK_PATH)/osal/*.cpp)
 # select the OS
 ifeq ($(OS_FSFW),rtems)
 CXXSRC += $(wildcard $(FRAMEWORK_PATH)/osal/rtems/*.cpp)
+
 else ifeq ($(OS_FSFW),linux)
 CXXSRC += $(wildcard $(FRAMEWORK_PATH)/osal/linux/*.cpp)
+
 else ifeq ($(OS_FSFW),freeRTOS)
 CXXSRC += $(wildcard $(FRAMEWORK_PATH)/osal/FreeRTOS/*.cpp)
+
 else ifeq ($(OS_FSFW),host)
 CXXSRC += $(wildcard $(FRAMEWORK_PATH)/osal/host/*.cpp)
+ifeq ($(OS),Windows_NT)
+CXXSRC += $(wildcard $(FRAMEWORK_PATH)/osal/windows/*.cpp)
+else
+# For now, the linux UDP bridge sources needs to be included manually by upper makefile
+# for host OS because we can't be sure the OS is linux.
+# Following lines can be used to do this:
+# CXXSRC += $(FRAMEWORK_PATH)/osal/linux/TcUnixUdpPollingTask.cpp
+# CXXSRC += $(FRAMEWORK_PATH)/osal/linux/TmTcUnixUdpBridge.cpp
+endif
+
 else
 $(error invalid OS_FSFW specified, valid OS_FSFW are rtems, linux, freeRTOS, host)
 endif